Where is all the water that may form oceans on distant planets and moons? The SPHEREx astrophysics mission will search the ...

A new way to study 3D maps of galaxies in the cosmos without compressing the data is revealing new information about the dark ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Breaking space news, the latest updates on rocket launches, skywatching events and more! In addition to helping the researchers nail down the nebula's ellipsoidal structure, the 3D model also ...

All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course.