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Artemis III will help test crucial systems needed for the planned Artemis V Moon landing in 2028.

This article is for students grades 5-8. Mass distribution affects everything from galaxy shapes to aircraft design to planetary rotation. It’s used to map stars in our universe, figure out what planets are made of, and even to determine how luggage is loaded onto an airplane. Mass distribution can...

The mysterious Amaterasu particle may not be a proton at all. New research suggests that some of the most extreme cosmic rays could be ultraheavy atomic nuclei, heavier than iron, which are better able to retain their energy while traveling through space. This idea could help explain how these rare...

Astronomers have spent years searching for a possible hidden giant planet far beyond Neptune. Unusual orbits among distant Kuiper Belt objects have fueled the Planet Nine theory, but recent discoveries are challenging the idea by showing more stable motion than expected. If Planet Nine exists, it ma...

Summary pending review.

Summary pending review.

Summary pending review.

Summary pending review.