The moon has been slowly shrinking for millions of years. Now, as Artemis 3 nears its 2026 launch date, geologists worry about whether moonquakes and lunar landslides will impact landing.
Possible amino acids spewing from Enceladus' subsurface ocean can survive impact with a spacecraft, lab experiments show.
The NISAR satellite, a collaboration between NASA and India's space agency ISRO, will help scientists monitor how climate change is affecting Earth's varied landscapes.
Earth successfully received a message beamed from NASA's Psyche spacecraft, located some 10 million miles away.
A group of physicists has measured gravity using the effects of time dilation — the slowing of time imparted by increased velocity or gravitational force — on atoms.
The "active galactic nucleus" phase of the supermassive black hole at the heart of the galaxy Arp 187 has apparently just ended.
Astronomers may not know what dark matter is, but they do know that galaxies are supposed to contain a lot of the shadowy, invisible substance.