WEBVTT

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Anna: Welcome to Astronomy Daily, your cosmic

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companion for all things space. I'm

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Anna, and I'm thrilled to bring you today's

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celestial roundup of the most fascinating

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developments from across the universe.

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Today we're exploring a diverse constellation

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of space news that spans from our own

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backyard to the very heart of our galaxy.

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We'll start with the latest on SpaceX's

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Starship program, where the FAA has made some

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crucial decisions about Flight 9 following

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March's explosive setback. Then we'll jet off

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to Australia, where a Histor rocket second

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launch attempt was scrubbed at the last

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minute due to an unexpected glitch. With

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a most peculiar payload aboard, our journey

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takes us deeper into space as we discover

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something truly remarkable. Planets forming

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in the extreme environment at the center of

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our Milky Way, challenging what scientists

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thought possible about planetary formation.

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We'll also delve into theoretical physics

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with a fascinating new proposal about dark

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matter. Could this mysterious substance

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actually be evolving over time? The answer

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might solve one of cosmology most persistent

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puzzles. And finally, we'll travel back in

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time to discover evidence of what may be the

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most violent solar storm ever to hit Earth.

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A cosmic event so powerful it left traces we

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can still detect 14,300 years later.

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So buckle up for a journey across space and

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time as we explore today's biggest

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astronomical breakthroughs.

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Let's m start with some SpaceX news. The

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Federal Aviation Administration has given

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SpaceX a conditional green light for its

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ninth Starship flight, approving license

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modifications but stopping short of

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authorizing an immediate launch. This

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decision comes in the wake of Flight 8's

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explosion in March, which created significant

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disruptions in our skies. Before

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Elon Musk's massive rocket can take to the

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launch pad again, SpaceX must wait for the

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FAA to either close its investigation into

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the Flight 8 mishap or make a specific return

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to flight determination. As you might recall,

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the previous test ended dramatically when the

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spacecraft began spinning uncontrollably with

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its engines cut off before exploding in

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space. That incident wasn't just a setback

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for SpaceX. It disrupted approximately

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240 flights with space debris concerns

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forcing more than 24 aircraft into

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diversions. It's a stark reminder that even

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events happening in space can have very real

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consequences for air travel here on Earth.

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The FAA is currently reviewing SpaceX's

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mishap report, which was only submitted on

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May 14. When Flight 9 does

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eventually launch, we'll see expanded safety

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measures, including larger aircraft and

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maritime hazard areas, both in the United

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States and other countries. This expansion

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stems directly from the March explosion and

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reflects Another notable first, SpaceX

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plans to reuse a UH previously launched super

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heavy booster rocket, marking an important

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milestone in the company's reusability goals.

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The impact on air travel will be substantial

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when the launch eventually proceeds. The

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flight path will affect air routes extending

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1,600 nautical miles eastward from

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Texas through the Straits of Florida.

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Both the Bahamas and Turks and Caicos are

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expected to close their airspace up to

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6,000ft, while the FAA will close

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airspace above that level. All told,

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the agency estimates about 175 flights

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will be affected. In a separate but

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related decision, the FAA has also approved

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increasing the number of launches at SpaceX's

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Boca Chica, Texas facility from

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five to as many as 25, a significant

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expansion of operations that had actually

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been announced back in March. While these

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setbacks may seem disappointing, it's worth

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remembering the ambitious nature of what

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SpaceX is attempting to the Starship system

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stands at a towering 403ft and

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represents the centerpiece of Musk's vision

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to eventually send humans to Mars,

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potentially as soon as the turn of the

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decade. The March explosion marked the

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second consecutive failure in SpaceX's test

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launch program, following another explosion

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in the seventh test flight. Both incidents

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occurred during early mission phases that

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SpaceX had previously navigated successfully,

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highlighting the ongoing challenges in

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developing such revolutionary technology.

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Next, an update from Australia in what

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would have been a historic moment for

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Australia's space industry, Gilmour Space

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Technologies has been forced to postpone its

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eagerly anticipated rocket launch after

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discovering a glitch in the nose cone

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mechanism. This would have marked the first

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time an Australian made rocket reached orbit

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from Australian soil. M the company reported

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Friday that an electrical fault erroneously

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triggered the opening mechanism of the carbon

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fiber nose cone during pre flight testing.

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In short, the nose cone fell off.

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This critical component is designed to shield

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the payload, in this case, quite charmingly,

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a jar of vegemite as the rocket ascends

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through Earth's atmosphere. Fortunately,

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the mishap occurred before fueling began at

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the company's spaceport near Bowen, a coastal

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township situated about 1000km north of

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Brisbane in Queensland. Both the rocket and

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ground crew were unharmed in the incident.

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CEO Adam Gilmour maintained an optimistic

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outlook despite the setback, stating, while

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we're disappointed by the delay, we're

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already working through a resolution and

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expect to be back on the pad soon. He

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emphasized that safety remains their highest

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priority, a sentiment echoed by

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communications chief Michelle Gilmour, who

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noted that the team is accustomed to such

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challenges. We do rockets, they are used to

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setbacks. The 23 meter

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3 stage ARIS rocket represents a significant

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achievement in Australian aerospace

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engineering. Weighing 30 tons when fully

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fueled, it employs a hybrid propulsion system

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combining solid inert fuel with a liquid

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oxidizer. The team expects the delay to last

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at least a few weeks as they transport a

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replacement nose cone to the launch site.

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This postponement follows another delay just

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the previous day caused by a bug in the

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external power system used for system checks.

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These consecutive setbacks highlight the

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inherent challenges in rocket development,

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even for a company with a decade of

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experience in the field. The choice of

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Vegemite as payload speaks to the Australian

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character of the mission, with Michelle

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Gilmour describing the iconic spread as

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hardy, resilient, like Ozzies.

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The payload reportedly remained intact

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despite the nosecone malfunction. With

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230 employees and backing from venture

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capital group Blackbird and pension fund

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Hesta, Gilmour, Space Technologies has

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ambitious plans. While this test flight has

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been delayed, the company remains focused on

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beginning commercial launches by late

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2026 or early 2027,

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potentially establishing Australia as a

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significant player in in the increasingly

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competitive commercial space launch industry.

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Let's move on out to some space news. In a

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uh, groundbreaking discovery that challenges

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our understanding of planetary formation,

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astronomers have found evidence of

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protoplanetary disks forming in the most

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extreme environment of our galaxy, its very

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center. An international team from Peking

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University, the Shanghai Astronomical

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Observatory, and the University of Cologne

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conducted the most detailed survey yet of the

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Milky Way's central molecular zone, or

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cmz, revealing that planets may be forming

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in places we never expected.

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Protoplanetary disks are essentially cosmic

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nurseries, swirling rings of gas and dust

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surrounding young stars where planets are

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born. Within these structures, tiny dust

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particles collide and stick together,

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gradually building into pebbles, boulders,

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and eventually planetary embryos through a

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process called core accretion. As

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these embryonic planets grow, they leave

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behind distinctive patterns that astronomers

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can detect with advanced telescopes. What

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makes this discovery so remarkable is the

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location. The galactic center presents

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incredibly harsh conditions with intense

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radiation, strong magnetic fields, and

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turbulent gas clouds, environments previously

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thought hostile to planet formation. Yet the

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research team identified over 500 dense

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cores where stars are forming under these

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remarkably different conditions. Detecting

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these systems was no small feat. The central

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molecular zone is approximately 17 billion

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astronomical units away and heavily obscured

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by dust. To overcome these challenges, the

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team employed the Atacama Large Millimeter

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Array, or alma, in Chile. This

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powerful radio telescope combines signals

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from widely spaced antennas to achieve

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extraordinary resolution, allowing

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researchers to observe structures as small as

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1,000 astronomical units. Despite the immense

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distance, the team used a clever approach

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called dual band imaging Capturing two

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wavelengths at the same resolution to gather

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critical data on temperature, dust

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composition and structure. What

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particularly surprised researchers was that

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over 70% of the dense cores

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Appeared redder than expected, suggesting the

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presence of protoplanetary disks.

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As Feng Weishu from the University of

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Cologne's Institute of Astrophysics described

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it, we were astonished to see these little

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red dots across the whole molecular clouds.

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They are telling us the hidden nature of

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dense star forming cores. The

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findings suggest there may be over 300

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potential disk forming systems in just three

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CMZ clouds, opening a new window into how

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planetary systems might form under radically

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different conditions Than those near our Sun.

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This diversity in planet forming environments

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could have profound implications for our

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understanding of exoplanet populations such

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as throughout the Galaxy. If planets can

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form in the turbulent high pressure

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environment at the galactic center, it

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suggests the building blocks of planetary

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systems Are far more resilient and adaptable

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than previously thought. As astronomers

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continue to study these distant

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protoplanetary disks, we may soon discover

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whether these early formations can indeed

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evolve into full planetary systems and how

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such processes might differ across the vast

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expanse of the Milky Way.

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Next up, everybody's favorite subject, dark

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matter. For a while now, cosmologists have

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been wrestling with a perplexing mystery

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known as the Hubble tension problem. While

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observations consistently support the

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expanding universe model, There's a troubling

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discrepancy. Measurements from the early

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cosmos show a lower acceleration rate Than

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what we observe locally. This

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inconsistency has led scientists to propose

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numerous potential solutions, from

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questioning general relativity to rethinking

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dark matter entirely. Now a

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fascinating new theory has emerged that puts

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a fresh spin on dark matter. What if it

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evolves over time? This concept is

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particularly novel because, while evolving

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dark energy has been proposed before, the

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idea of dark matter changing over time hasn't

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received much attention from researchers.

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There are good reasons for this oversight.

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First, we have excellent observational

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evidence for dark matter. It appears to be

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some kind of material that doesn't interact

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strongly with light, perfectly explaining

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galaxy rotation curves and gravitational

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lensing. The only major gap is our inability

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to directly detect dark matter particles.

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Second, most critics of dark matter theory

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Focus on eliminating it entirely through

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alternative M models like modified gravity,

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rather than refining the concept. What makes

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this new approach interesting is how it

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flips. Uh, our thinking. Researchers have

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found that models with evolving dark matter

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and constant dark energy can produce results

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similar to those with constant dark matter

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and evolving dark energy. To match

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observations, they propose that dark matter

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must have a changeable equation of state that

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oscillates over time. This isn't actually as

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strange as it might sound. Consider

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neutrinos. They have mass, don't

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interact strongly with light, and are

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effectively a form of hot dark matter, Though

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they can't account for all the dark matter in

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the universe. Importantly,

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neutrinos undergo mass oscillation.

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Perhaps cold dark matter particles experience

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something similar. The researcher's model

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suggests that roughly 15% of cold

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dark matter might be oscillatory, with the

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remaining 85% being standard dark matter.

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This combination would address the Hubble

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tension while remaining consistent with our

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other dark matter observations. It's worth

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emphasizing that this remains a conceptual

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um, model without specific constraints for

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dark matter particles. The researchers

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themselves describe it as a toy model, a

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simplified framework that captures essential

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features while omitting details.

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Nevertheless, it opens an intriguing new

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avenue for dark matter research that broadens

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our thinking beyond conventional models as

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we continue to gather data and refine our

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understanding of the cosmos. Evolving dark

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matter might prove to be a valuable piece in

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solving one of astrophysics most persistent

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puzzles. At the very least, it demonstrates

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how creative thinking can help us tackle even

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the most fundamental questions about our

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universe.

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Finally, today, a little history lesson.

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Imagine discovering that 14,300

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years ago, our planet was struck by a cosmic

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event so powerful it left physical evidence

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that scientists can still detect today.

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That's exactly what researchers have

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uncovered. The most violent solar storm in

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recorded history, dwarfing anything we've

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experienced in modern times. By

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examining partially fossilized tree trunks

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and ancient ice cores, scientists found

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unmistakable signatures of an extraordinary

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event that occurred around 12,350

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BCE. Using a specially developed

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climate chemistry model called SOCOL,

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researchers have now confirmed this was a

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massive solar storm, the biggest we've ever

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found evidence for. To put this in

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perspective, the ancient storm was more than

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500 times more intense than the largest event

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of the modern satellite era, which occurred

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in 2005. That's simply staggering when you

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consider the potential impacts. For those

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wondering how scientists can possibly know

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about something that happened so long ago,

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the answer lies in radioactive carbon 14.

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When the sun unleashes a, uh, powerful

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coronal mass ejection, essentially billions

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of tons of plasma with embedded magnetic

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fields, the particles interact with our

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atmosphere to temporarily increase carbon 14

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production. This carbon 14 gets

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incorporated into living organisms like

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trees, creating a distinctive spike in tree

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rings from that period. Since carbon 14

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decays at a known rate, scientists can

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precisely date these events and even

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determine their relative strength. What makes

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the 12,350 before Common Era

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event particularly significant is that it's

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the only known extreme solar particle

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event outside the Holocene epoch, the

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relatively stable warm climate period of the

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past 12,000 years. This required the

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researchers to develop new modeling

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approaches that could analyze radiocarbon

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data under different climate conditions.

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The implications for our modern world are

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sobering. We've already seen how smaller

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solar storms can disrupt technology like

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the carrington event of 1859, which

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set telegraph systems ablaze worldwide, or

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the 1989 storm that caused multiple power

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grid failures. Now imagine something hundreds

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of times more powerful hitting our satellite

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dependent, electronically interconnected

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civilization. This discovery establishes a

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new worst case scenario for space weather

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preparedness. Understanding the potential

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scale of these events is crucial for

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evaluating risks to modern infrastructure,

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from power grids and communication systems to

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the satellites that enable everything from

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GPS navigation to weather forecasting.

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While such extreme events appear to be rare

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on human timescales, this research reminds

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us that the sun is capable of far more

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violent outbursts than anything we've

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witnessed in recent centuries. As we become

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increasingly dependent on vulnerable

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technologies, the importance of space weather

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monitoring and developing resilient systems

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becomes even more critical. This ancient

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solar tantrum, preserved in the rings of

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trees that stood witness to its fury, serves

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as both a scientific treasure and a warning

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from the distant past.

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And on that somber note, that wraps up

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another fascinating journey through our

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cosmos. From the earthbound challenges facing

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SpaceX's Starship and Australia's budding

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rocket program, to the mind bending

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discoveries of planets forming in our

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galaxy's heart and the possibility of

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evolving dark matter, we've covered quite the

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astronomical landscape today. And that

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ancient solar storm revelation really puts

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things in perspective, doesn't it? A cosmic

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event 500 times more powerful than anything

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we've experienced in modern times reminds us

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just how dynamic and sometimes temperamental

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our stellar companion can be. I'm

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Anna and I've been your guide through today's

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cosmic headlines on Astronomy Daily. If you

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enjoyed this episode and want to keep up with

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00:17:06.580 --> 00:17:08.700
all the latest developments in space science

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00:17:08.700 --> 00:17:11.380
and exploration, I invite you to visit our

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00:17:11.380 --> 00:17:13.940
website@astronomydaily.IO

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00:17:14.180 --> 00:17:16.100
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00:17:16.100 --> 00:17:18.860
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Don't forget to subscribe to Astronomy Daily

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00:17:34.070 --> 00:17:36.190
discoveries and insights into our fascinating

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universe, and I'd love to share them with

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you. Until tomorrow, keep looking up the

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cosmos never ceases to amaze.