Is frozen water scattered in systems around other stars? Astronomers have long expected it is, partially based on previous ...

A green glow snapped from Mars marks the first time that an aurora has been observed from the surface of another planet.

When we think about asteroids that could threaten Earth, we often imagine massive, city-sized rocks hurtling through space. But what if the real danger comes from much smaller, barely detectable ones?

A new study, however, identifies a possible candidate. A separate team of astronomers compared 1983 data from the Infrared ...

Apples-to-apples comparisons in the distant universe are hard to come by. Whether the subject is dwarf galaxies, supermassive black holes, or 'hot Jupiters,' astronomers can spend months or years ...

According to NASA, the aurora on Earth may last only a few minutes, but on Saturn, it can last for days. In the 2010s, aurora ...

The unexpected 2020 collapse of the Arecibo Observatory left NASA's Goldstone Solar System Radar as the new heavy hitter when ...

A glass bead retrieved by China's Chang'e-5 lunar mission is offering a glimpse into the moon's hidden interior and violent past. Witness live views of Earth from the International Space Station as it ...

What is the hottest planet in the solar system? If you want to know which is the hottest star in the solar system, this ...

Earth has four seasons, but do other planets in our solar system also have hot summer days and cold winter nights?

Our solar system may have a ninth planet after all, researchers say. The possibility that an additional planet may be ...