NASA's IMAP mission will delve into the mysteries of the heliosphere, mapping its boundaries and studying solar wind ...

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

The six planets will be visible in the days immediately leading up to Jan. 21, and for about four weeks afterward. Mars, ...

A new way of measuring structures deep inside Earth has highlighted numerous previously unknown blobs within our planet's ...

Astronomers have captured the most detailed infrared images yet of an active galactic nucleus (AGN), using the Large ...

Venus, Saturn, Jupiter and Mars are all visible after sunset, but social media claims about it being a rare "planetary ...