Blue Ghost and New Glenn started off the year right. Many more launches are on the way, and many can be watched online.

Solar eclipses are incredible events that only take place about once every 18 months. When they occur, they attract millions ...

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

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

Six planets will be in alignment this weekend, with four of them shining bright in one sweeping view. What to know about the ...

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