Category Astronomy/Space

NASA’s Micro-mission Lunar Trailblazer will make Macro-Measurements of the Lunar Surface in 2025

Missions like NASA’s TROPICS use a network of small satellites to take more data than one satellite would be able to do alone. NASA Applied Sciences

NASA’s upcoming Artemis II mission is slated to return astronauts to the moon no sooner than April 2026. Astronauts were last on the moon in 1972 during the Apollo 17 mission.

Artemis II will utilize NASA’s Space Launch System, which is an extremely powerful rocket that will enable human space exploration beyond Earth’s atmosphere. The crew of four will travel in an Orion spacecraft, which the agency launched around the moon and successfully returned during the Artemis I mission.

But before Artemis II, NASA will send two missions to scout the surface of the lunar south pole for resources that could sustain human space travel and e...

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Observers Investigate a Nearby Galaxy Cluster Merger

Observations investigate a nearby galaxy cluster merger
Spectral separation image produced using a technique related to that of spectral tomography in order to highlight the flatter and steeper components in CIZA0107. Credit: arXiv (2024). DOI: 10.48550/arxiv.2412.15015

Using the Very Large Array (VLA), an international team of astronomers have observed a nearby galaxy merger known as CIZA J0107.7+5408. Results of the observational campaign, presented December 20 on the preprint server arXiv, could help us better understand the merging processes that take place between galaxy clusters.

Galaxy clusters contain up to thousands of galaxies bound together by gravity. They generally form as a result of mergers and grow by accreting subclusters...

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Astronomers discover an Ultra-Massive Grand-Design Spiral Galaxy

Astronomers discover an ultra-massive grand-design spiral galaxy
The morphology and photometric redshift of Zhúlóng. Credit: Xiao et al., 2024.

Using the James Webb Space Telescope (JWST), an international team of astronomers has detected a new grand-design spiral galaxy as part of the PANORAMIC survey. The newfound galaxy, named Zhúlóng, is extremely massive and appears to be the most distant spiral galaxy identified so far. The finding was detailed in a paper published December 17 on the pre-print server arXiv.

Grand-design spiral galaxies are characterized by their prominent, well-defined arms, which circle outwards from a clear core. It is assumed that the arms in such galaxies are actually overdense regions of the disk which trigger star formation as incoming material is compressed in that region.

It is still not well understood when ...

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In Disney’s ‘Moana,’ the Characters Navigate using the Stars—an Astronomer explains how these methods work

If you have visited an island like one of the Hawaiian Islands, Tahiti or Easter Island, also known as Rapa Nui, you may have noticed how small these land masses appear against the vast Pacific Ocean. If you’re on Hawaii, the nearest island to you is more than 1,000 miles (1,600 kilometers) away, and the coast of the continental United States is more than 2,000 miles (3,200 kilometers) away. To say these islands are secluded is an understatement.

For me, watching the movie “Moana” in 2016 was eye-opening. I knew that Polynesian people traveled between a number of Pacific islands, but seeing Moana set sail on a canoe made me realize exactly how small those boats are compared with what must have seemed like an endless ocean...

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