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SpaceX’s Starship goes the distance in 10th test flight

Starship liftoff from Texas launch pad
SpaceX's Starship rocket rises from its launch pad at Starbase, Texas. (Credit: SpaceX via YouTube)

SpaceX executed the most successful flight test of its super-powerful Starship launch system to date, featuring Starship’s first-ever payload deployment and a thrilling Indian Ocean splashdown. Today’s 10th test flight followed three earlier missions that fell short of full success.

Starship’s Super Heavy booster rose from SpaceX’s Starbase launch pad in South Texas at 6:30 p.m. CT (4:30 p.m. PT) after a trouble-free countdown. The first launch attempt had to be called off on Aug. 24 due to a leaky hose in the ground support system, and a second attempt was scrubbed on Aug. 25 because of unacceptable weather.

During today’s liftoff, all 33 of the booster’s methane-fueled Raptor engines lit up to send the upper stage, known as Ship 37, to a height of more than 110 miles (180 kilometers). After stage separation, Ship’s six Raptor engines took over, and Super Heavy conducted a series of test maneuvers before sinking into the Gulf of Mexico.

“Incredible flight for booster today,” SpaceX engineer Amanda Lee said during today’s webcast.

Halfway through its not-quite-orbital trip, Ship 37 opened a slot to deploy eight thin Starlink satellite simulators, in a manner reminiscent of cranking out candies from a Pez dispenser. Hundreds of SpaceX employees cheered as they watched space-to-ground video feeds at Starbase and at the company’s HQ in California. The dummy satellites were designed to burn up during atmospheric re-entry.

Today’s successful deployment buoyed SpaceX’s confidence that in the future, each Starship mission will be able to deploy scores of next-generation satellites for the Starlink broadband data constellation.

The end of today’s test mission came when Ship made a blazing descent through the atmosphere. At one point, a webcam picked up a view of debris flying off from the skirt around the engines at the bottom of the rocket ship. Yet another shot showed red-hot material being blasted away from Ship 37’s control flaps.

“We’re kind of being mean to this Starship,” SpaceX launch commentator Dan Huot said. “We’re really trying to see what are its limits. … We are pushing it beyond essentially what we think we’ll have to fly at.”

Despite the damage, Ship 37 was able to relight its rocket engines, flip around and splash down into the Indian Ocean. Then it exploded into flames. The whole test flight took just a little more than an hour.

“We promised maximum excitement. Starship delivered,” Huot said.

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Universe Today

A plan to manage asteroid mining wins Schweickart Prize

Illustration: Mining spacecraft on asteroid with Earth in background
An artist's conception shows an asteroid mining operation with Earth in the background. (Credit: NASA)

The $10,000 Schweickart Prize is awarded every June to mark Asteroid Day and draw attention to risks from above — and this year’s prize is going to a team of students who are proposing a panel to focus on what could happen when we start tinkering with asteroids.

The winning proposal calls for the creation of a Panel on Asteroid Orbit Alteration, which would address the risks posed by unintended asteroid orbit changes. Such changes could crop up during asteroid mining operations, research missions to asteroids, or even when a spacecraft malfunctions and kicks an asteroid onto a perilous path.

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Universe Today

After awesome launch, Starship spins out of control

Starship liftoff
SpaceX's Starship rocket lifts off from its Texas launch pad. (Credit: SpaceX via X)

SpaceX’s Starship super-rocket got off to a great start today for its ninth flight test, but the second stage ran into a host of issues and made an uncontrolled re-entry.

The 400-foot-tall rocket’s first-stage booster, known as Super Heavy, rose from its Starbase launch pad in Texas just after 6:30 p.m. CT (4:30 p.m. PT) with all 33 methane-fueled engines blazing. Cheers erupted from SpaceX’s teams in Texas and at the company’s HQ in California.

But the second stage, known as Ship, wasn’t able to open its payload doors for what would have been Starship’s first-ever payload deployment. The plan had called for Ship to send a set of eight Starlink satellite simulators into space. Instead, the experiment was scrubbed.

Minutes later, the Starship team got worse news: As the Ship headed toward a planned splashdown in the Indian Ocean, it began spinning uncontrollably. SpaceX commentator Dan Huot said the second stage lost attitude control, apparently due to propellant leaks.

“Not looking great with a lot of our on-orbit objectives today,” he said. Ship broke up as it descended over a wide swath of open ocean that had been cleared for the splashdown.

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Universe Today

Dazzling pictures celebrate Hubble’s 35 years in orbit

Four pictures from Hubble Space Telescope
The Hubble Space Telescope's 35th-birthday presents include pictures of Mars, the Rosette Nebula, planetary nebula NGC 2899 and the barred spiral galaxy NGC 5335. Credits: NASA, ESA, STScI; Image Processing: Joseph DePasquale (STScI), Alyssa Pagan (STScI)

This week brings the Hubble Space Telescope’s 35th birthday — but instead of getting presents, the Hubble team is giving out presents in the form of four views of the cosmos, ranging from a glimpse of Mars to a glittering picture of a far-out galaxy.

It’s the latest observance of a tradition that goes back decades, in which NASA and the Space Telescope Science Institute release pictures to celebrate the anniversary of Hubble’s launch into Earth orbit aboard the space shuttle Discovery on April 24, 1990.

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Lucy probe snaps closeup of weirdly shaped asteroid

Closeup of asteroid Donaldjohanson
NASA's Lucy probe captured this view of the asteroid Donaldjohanson from about 660 miles away. (NASA / Goddard / SwRI / JHUAPL / NOIRLab)

NASA’s Lucy spacecraft made a successful flyby of the second asteroid on its must-see list over the weekend, and sent back imagery documenting the elongated object’s bizarre double-lobed shape.

It turns out that asteroid Donaldjohanson — which was named after the anthropologist who discovered the fossils of a human ancestor called Lucy — is what’s known as a contact binary, with a couple of ridges in its narrow neck. In today’s image advisory, NASA compares the ridged structure to a pair of nested ice cream cones.

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Fresh findings revive debate about life on alien planet

Illustration: K2-18 b planet
An artist's conception shows the planet K2-18 b and its host star. (ESA / Hubble / M. Kornmesser)

Two new studies have sparked fresh debate about a faraway planet with a weird atmosphere. One of the studies claims additional evidence for the presence of life on the planet K2-18 b, based on chemical clues. The other study argues that such clues can be produced on a lifeless world covered with hot magma.

The hubbub illustrates how tricky it can be to determine whether life exists beyond Earth by looking for “biosignatures” with powerful telescopes — in this case, NASA’s James Webb Space Telescope. It also illustrates the potential pitfalls of reporting provocative results.

A study published today in the Astrophysical Journal Letters attracted widespread attention when it reported that the chemical signatures of dimethyl sulfide and dimethyl disulfide had been found in the atmosphere of K2-18 b, which orbits a red dwarf star 124 light-years away from Earth. The findings were a follow-up to an earlier study published by the same researchers, which detected carbon-bearing molecules including methane and carbon dioxide in the atmosphere.

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Universe Today

Asteroid will miss Earth — but may set off lunar light show

Graphic: Diagram showing line of probability for 2024 YR4 collision with moon
The yellow streak represents possible locations of asteroid 2024 YR4 on Dec. 22, 2032, as calculated on April 2, 2025. (NASA / JPL / CNEOS)

Although astronomers have ruled out a smash-up between Earth and an asteroid known as 2024 YR4 in the year 2032, the building-sized space rock still has a chance of hitting the moon. In fact, the chances — slight as they are — have doubled in the past month.

The latest assessment from NASA puts the probability of a lunar impact on Dec. 22, 2032, at 3.8%. That’s an increase from the 1.7% figure that was reported in February. Since then, further observations made by ground-based telescopes and NASA’s James Webb Space Telescope have somewhat reduced the uncertainty over where exactly the asteroid will be when its orbit intersects Earth’s orbital path (and the moon’s).

Over the course of observing 2024 YR4, astronomers had set the chances of a collision with Earth in 2032 as high as 2.3% — but that wasn’t because of what the asteroid may or may not do over the next seven years. Instead, it merely reflected how little was known about YR4’s precise orbit. The chances of an Earth impact fell to zero more than a month ago as more observations came in.

Something similar might well happen to the chances for a lunar impact. If the calculations progress the way they usually do for asteroid orbits, the chances may go up for a while but then vanish completely. Stay tuned: The Webb telescope is due to check in again with YR4 in late April or early May.

What if it turns out that the asteroid is truly on course to hit the moon? “There might be an unbelievable light show,” former NASA astronaut Ed Lu, who’s in charge of the B612 Foundation’s Asteroid Institute, said last week at the University of Washington.

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SpaceX Starship test falls short for second time in a row

SpaceX Starship second stage in flight
An onboard camera shows the Starship second stage tumbling. (SpaceX via YouTube)

For the second time in a row, SpaceX lost the second stage of its Starship launch system during a flight test, while recovering the first-stage Super Heavy booster.

Today’s eighth Starship flight test came a month and a half after a similarly less-than-perfect mission that sparked an investigation.

“The primary reason we do these flight tests is to learn,” SpaceX launch commentator Dan Huot said. “We have some more to learn about this vehicle.”

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Universe Today

Telescope tracks fireworks around our galaxy’s black hole

Flares in disk surrounding Milky Way's central black hole
An illustration shows hot spots in the disk swirling around the Milky Way's central black hole. (Credit: NASA, ESA, CSA, Ralf Crawford / STScI)

The supermassive black hole at the center of our Milky Way galaxy may not be as voracious as the gas-gobbling monsters that astronomers have seen farther out in the universe, but new findings from NASA’s James Webb Space Telescope reveal that its surroundings are flaring with fireworks.

JWST’s readings in two near-infrared wavelengths have documented cosmic flares that vary in brightness and duration. Researchers say the accretion disk of hot gas surrounding the black hole, known as Sagittarius A*, throws off about five or six big flares a day, and several smaller bursts in between. The observations are detailed today in The Astrophysical Journal Letters.

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Bullseye! How a galaxy collision stirred up ripples in space

Hubble view of Bullseye galaxy
NASA's Hubble Space Telescope captured this view of the Bullseye Galaxy. Credit: NASA, ESA, Imad Pasha (Yale), Pieter van Dokkum (Yale)

What happens when one galaxy shoots a bigger galaxy right through the heart? Like a rock thrown into a pond, the smashup creates a splash-up of starry ripples. At least that’s what happened to the Bullseye galaxy, which is the focus of observations made by NASA’s Hubble Space Telescope and the Keck Observatory in Hawaii.

In a study published today by The Astrophysical Journal Letters, a research team led by Yale University’s Imad Pasha identifies nine visible ring-shaped ripples in the structure of the galaxy, formally known as LEDA 1313424. The galaxy is 567 million light years from Earth in the constellation Pisces.

The Bullseye now holds the record for the most rings observed in a galaxy. Previous observations of other galaxies showed a maximum of two or three rings.

“This was a serendipitous discovery,” Pasha said in a news release. “I was looking at a ground-based imaging survey and when I saw a galaxy with several clear rings, I was immediately drawn to it. I had to stop to investigate it.”

Eight separate rings could be spotted in the image captured by Hubble’s Advanced Camera for Surveys. The ninth ring was identified in data from the Keck Observatory. Follow-up observations also helped the team figure out which galaxy plunged through the Bullseye’s core. It’s the blue dwarf galaxy visible to the center-left of LEDA 1313424 in the Hubble image.

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