A test rocket intended to kickstart satellite launches from Europe fell to the ground and exploded less than a minute after takeoff from Norway on Sunday, in what the German startup Isar Aerospace had described as an initial test.

The Spectrum started smoking from its sides and crashed back to Earth in a powerful explosion just after its launch from from the Andøya spaceport in the Arctic. Images were broadcast live on YouTube.

[Image Description: In the centre is an elliptical galaxy, seen as an oval-shaped glow around a small bright core. Around this is wrapped a broad band of light, appearing like a spiral galaxy stretched and warped into a ring, with bright blue lines drawn through it where the spiral arms have been stretched into circles. A few distant objects are visible around the ring on a black background.]

https://esawebb.org/images/potm2503a/

SMACSJ0028.2-7537 is the cluster that creates the lensing effect, the spiral galaxy is seen behind it.

[Image description: Angled from the upper left corner to the lower right corner of the image is a conical shaped orange-red cloud known at Herbig-Haro 49/50. This feature takes up about three-fourths of the length of this angle. The upper left end of this feature has a translucent, rounded end. At this same location there is a background spiral shaped galaxy with a concentrated blue center that fades outwards to blend in with red spiral arms. The conical feature widens slightly from the rounded end at the upper right down to the lower right. The black background of space is clearer, speckled with some white stars and smaller, more numerous, fainter white galaxies.]

https://esawebb.org/images/weic2506a/

https://www.nytimes.com/2025/03/19/science/space/astronomer-desi-dark-energy.html https://archive.is/H23dH

For those of us who have closely followed the story of Wilmore and Williams over the last nine months—and Ars Technica has had its share of exclusive stories about this long and strange saga—the final weeks before the landing have seen it take a disturbing turn.

In February, President Trump and the chief executive of SpaceX, Elon Musk, began to say that the two astronauts were "stranded" in space because the Biden administration did not want to bring them home. "They got left in space," Trump said.

"They were left up there for political reasons," Musk concluded.

Just what those political reasons were never specified. But the basic message was clear: Biden, bad; Trump, good.

The reality is that NASA set a plan for the return of Wilmore and Williams last August. The spacecraft that brought them back to Earth on Tuesday safely docked to the space station in September. They could have come home at any time since. NASA—not the Biden administration, which all of my reporting indicates was not involved in any decision-making—decided the best and safest option was to keep Wilmore and Williams in orbit until early this year. Musk knew this plan. He had to sign off on it. Senior NASA officials earlier this month confirmed, publicly and on the record, that the decision was made by the space agency in the best interests of the International Space Station Program. Not for political reasons.

And still, the lies came.

Astronomers have discovered 128 new moons orbiting Saturn, giving it an insurmountable lead in the running tally of moons in the solar system.

Until recently, the "moon king" title was held by Jupiter, but Saturn now has a total of 274 moons, almost twice as many as all the other planets combined. The team behind the discoveries had previously identified 62 Saturnian moons using the Canada France Hawaii telescope and, having seen faint hints that there were more out there, made further observations in 2023.

"Sure enough, we found 128 new moons," said the lead researcher, Dr Edward Ashton, a postdoctoral fellow in the Institute for Astronomy and Astrophysics at the Academia Sincia in Taiwan. "Based on our projections, I don't think Jupiter will ever catch up."

Image Credit: NASA, JPL-Caltech, SwRI, ASI, INAF, JIRAM

Why are there so many cyclones around the north pole of Jupiter? The topic is still being researched. NASA's robotic Juno mission orbiting Jupiter took data in 2018 that was used to construct this stunning view of the curious cyclones at Jupiter's north pole. Measuring the thermal emission from Jovian cloud tops, the infrared observations are not restricted to the hemisphere illuminated by sunlight. They reveal eight cyclonic features that surround a cyclone about 4,000 kilometers in diameter, just offset from the giant planet's geographic north pole. Similar data show a cyclone at the Jovian south pole with five circumpolar cyclones. The south pole cyclones are slightly larger than their northern cousins. Oddly, data from the once Saturn-orbiting Cassini mission has shown that Saturn's north and south poles each have only a single cyclonic storm system.

https://apod.nasa.gov/apod/ap250309.html

Frozen Lake Saint Clair in the North American Great Lakes system and the briny Salinas Las Barrancas in Argentina have little in common—save for their heart-like shapes. From the perspective of Earth’s orbit, the opposites combine to send a lacustrine Valentine’s Day message.

[Image description: At the centre is a thin vertical cloud known as Lynds 483 (L483) that is roughly shaped like an hourglass with irregular edges. The lower lobe is slightly cut off. The top lobe is seen in full, petering out at the top.]

https://esawebb.org/images/weic2503a/

This image of the Horsehead Nebula from NASA’s James Webb Space Telescope focuses on a portion of the horse’s “mane” that is about 0.8 light-years in width. It was taken with Webb’s NIRCam (Near-infrared Camera). The ethereal clouds that appear blue at the bottom of the image are filled with a variety of materials including hydrogen, methane, and water ice. Red-colored wisps extending above the main nebula represent both atomic and molecular hydrogen. In this area, known as a photodissociation region, ultraviolet light from nearby young, massive stars creates a mostly neutral, warm area of gas and dust between the fully ionized gas above and the nebula below. As with many Webb images, distant galaxies are sprinkled in the background.

This image is composed of light at wavelengths of 1.4 and 2.5 microns (represented in blue), 3.0 and 3.23 microns (cyan), 3.35 microns (green), 4.3 microns (yellow), and 4.7 and 4.05 microns (red).

NASA, ESA, CSA, Karl Misselt (University of Arizona), Alain Abergel (IAS, CNRS)

Source

Beautiful island universe Messier 94 lies a mere 15 million light-years distant in the northern constellation of the hunting dogs, Canes Venatici. A popular target for earth-based astronomers, the face-on spiral galaxy is about 30,000 light-years across, with spiral arms sweeping through the outskirts of its broad disk. But this Hubble Space Telescope field of view spans about 7,000 light-years or so across M94's central region. The sharp close-up examines the galaxy's compact, bright nucleus and prominent inner dust lanes, surrounded by a remarkable bluish ring of young, massive stars. The massive stars in the ring appear to be less than about 10 million years old, indicating the galaxy experienced a corresponding well-defined era of rapid star formation. As a result, while the small, bright nucleus is typical of the Seyfert class of active galaxies, M94 is also known as a starburst galaxy. Because M94 is relatively nearby, astronomers can explore in detail reasons for the galaxy's burst of star formation.

https://apod.nasa.gov/apod/ap250306.html

The idea of flying satellites in "very" low-Earth orbit is not new. Dating back to the dawn of the space age in the late 1950s, the first US spy satellites, as part of the Corona program, orbited the planet as low as 120 to 160 km (75 to 100 miles) above the Earth.

This low vantage point allowed the Kodak cameras on board the Corona satellites to capture the highest-resolution images of Earth during the height of the Cold War. However, flying so close to the planet brought a number of challenges, most notably that of atmospheric drag.

For much of the space age, therefore, satellites have flown much higher orbits. Most satellites today fly at an altitude of between 400 and 800 km (250 and 500 miles), which is high enough to avoid the vast majority of atmospheric drag while still being close enough to offer good communications and a clear view of the planet.

In recent years, a handful of new space companies have announced plans to develop small- and medium-size satellites designed to survive in very low-Earth orbit (VLEO) and capable of taking advantage of the closer-in vantage point. The first of these companies to actually reach the launch pad is a Denver-based startup named Albedo.

There's a new lander on the Moon. Yesterday Firefly Aerospace's Blue Ghost executed the first-ever successful commercial lunar landing. During its planned 60-day mission, Blue Ghost will deploy several NASA-commissioned scientific instruments, including PlanetVac which captures lunar dust after creating a small whirlwind of gas. Blue Ghost will also host the telescope LEXI that captures X-ray images of the Earth's magnetosphere. LEXI data should enable a better understanding of how Earth's magnetic field protects the Earth from the Sun's wind and flares. Pictured, the shadow of the Blue Ghost lander is visible on the cratered lunar surface, while the glowing orb of the planet Earth hovers just over the horizon. Goals for future robotic Blue Ghost landers include supporting lunar astronauts in NASA's Artemis program, with Artemis III currently scheduled to land humans back on the Moon in 2027.

https://apod.nasa.gov/apod/ap250303.html