Each of the planets, labeled b, c, d, and e, has a mass between 20% and 30% of Earth's, making them among the smallest yet ...

Take a tour of the space volcanoes on other planets and moons across the Solar System, and find out how they differ from ...

Astronomers had observed auroras on all other planets in the Solar System, and spotting one in Neptune completes the list.

In his lecture, Levine noted, the United States is planning a human mission to Mars that may begin as early as 2035. The ...

Yet despite the drumbeat of evidence, we still know of just one planet in the cosmos with life — the one you’re standing on.

We often focus on space observatories that peer beyond Earth. But the vast majority of satellites stare right back at us.

Scientists are using an array of instruments to detect other planets, some of which may harbor life—and others that most ...

An analysis of two decades of data from NASA's Hubble Space Telescope has provided fresh insights into the complex ...

What if water and hydrogen don’t stay separated inside planets like Earth and Neptune? New research from UCLA and Princeton ...

The eerie glow of Neptune's aurora has been revealed for the first time in new images collected by NASA’s James Webb Space ...

Astronomers used ALMA to observe Proxima Centauri and found frequent, intense flares that could destroy atmospheres of nearby ...

Ellipses are defined as curves that surround two focal points. At any point on the ellipse, the sum of the distance to both ...