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Arp Bot 🤖

Spitzer image of Arp 107, also known as UGC 5984.

In the shorter wavelength 3.6 micron band (left), the older stars in the small companion to the upper left and the bridge connecting the two galaxies are bright. the middle image at 8 microns provides a clear view of clumps of young stars. The multi-band picture (right) emphasizes this difference in stellar ages.

Credit: NASA, JPL-Caltech, B. J. Smith
Source: spitzer.caltech.edu/image/sig0

A panel showing three views of a pair of merging galaxies. On the right the pair is seen in shades of blue. The galaxy on the bottom right has a single, large spiral arm curving out from the core counterclockwise, from the 9 o'clock to the 3 o'clock positions. The upper left galaxy has a bright blue-white core but only a bit of very faint material. A broad curtain of stars and gas connects the two galaxies’ cores. A few blue dots, which are stars and galaxies are scattered around the black background. In the middle panel, the same galaxies are shown in shades of red. The structures in the bottom right spiral galaxy are still prominent, but only the core of the upper left galaxy is still visible. In the right panel the two views are combined. The bottom right galaxy is a combination of red and blue, with the blue structures extending slightly wider than the red ones. The upper left galaxy and the background stars and galaxies are mostly blue. Text: Interacting galaxy pair Arp 107, NASA/JPL-Caltech/B. J. Smith (East Tennessee State University), Spitzer Space Telescope•IRAC, sig05-006
#ArpGalaxy#Galaxy#Space
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Josh Universe :goldverify:

An Unusual Hole in Mars

https://apod.nasa.gov/apod/image/2504/MarsPit_mro_960.jpg

What created this unusual hole in Mars? Actually, there are numerous holes pictured in this Swiss cheese-like landscape, with all-but-one of them showing a dusty, dark, Martian terrain beneath evaporating, light, carbon dioxide ice. The most unusual hole is on the upper right, spans about 100 meters, and seems to punch through to a lower level. Why this hole exists and why it is surrounded by a circular crater remains a topic of speculation, although a leading hypothesis is that it was created by a meteor impact. Holes such as this are of particular interest because they might be portals to lower levels that extend into expansive underground caves. If so, these naturally occurring tunnels are relatively protected from the harsh surface of Mars, making them relatively good candidates to contain Martian life. These pits are therefore also prime targets for possible future spacecraft, robots, and even human interplanetary explorers.

Attribution:

@science@lemmy.world @science@beehaw.org @space@beehaw.org @space@lemmy.world @science@lemmy.ml @space@newsmast.community @space@lemmy.ml #space #science #nasa #astronomy

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R. Scott Pert

#ICUMI April 12, 2025
SpaceX doubleheader: Spy satellites launched in California, then Starlink ones in Florida

> #SpaceX on Saturday launched Starshield satellites for the National Reconnaissance Office from California then 12 hours later 21 Starlink satellites from Florida.

> The Falcon 9 lifted off at 5:25 a.m. PDT from Vandenberg Space Force Base's pad 4E.

> At 8:53 p.m. EDT, another Falcon 9 lifted off from Kennedy #Space upi.com/Science_News/2025/04/1

UPI · SpaceX launches spy satellites in California for National Reconnaissance Office - UPI.comSpaceX on Saturday launched Starshield satellites for the National Reconnaissance Office from California, hours after the private agency scrubbed a launch of Starlink satellites from Florida.
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