Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

Dive into a celestial masterpiece with the Hubble Space Telescope's latest snapshot of the Large Magellanic Cloud, showcasing ...

Planets around other stars need to be prepared for extreme weather conditions, according to a new study from NASA's Chandra X ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

Leo P, a tiny galaxy, stopped making stars after the universe’s reionization. Unlike most galaxies, it restarted billions of ...

Researchers used the James Webb Space Telescope to zero in on a dwarf galaxy that suddenly started making stars after a ...

This artist's illustration represents the results from a new study that examines the effects of X-ray and other high-energy ...

Our sun is a lonely star. At least half the stars in our galaxy have binary companions. This was nicely illustrated in the ...

Planet X, also called Planet Nine, is a hypothetical planetary body seven times the mass of Earth lurking behind Pluto. If ...

A newly released Hubble pic shows the galaxy LEDA 22057, where the supernova explosion occurred. The spiral galaxy's swirling ...

In our solar system, Earth is one of only three worlds that sees temperatures above 32 degrees Fahrenheit, while other ...