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

Stargazers will be treated to a dazzling six-planet "alignment" this January.

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

Because planets always appear in a line, the alignment isn't anything out of the norm. What's less common is seeing so many ...

Six of our cosmic neighbors are expected to line up across the night sky tonight, in what has been dubbed a "planetary parade ...

NASA’s James Webb Space Telescope has revealed the atmospheric origin of exoplanet GJ 1214 b and its results challenges ...

For much of January and February, you have the chance to see six planets in our solar system after dark, although two — Uranus and Neptune — will be hard to see without a telescope or high-powered ...

Icarus has nothing on NASA. The space agency’s Parker Solar ... we can better understand its impacts throughout our solar system, including on the technology we use daily on Earth and in space ...

The two Voyager spacecraft continue to be incredibly useful to Nasa, and losing it might have meant losing some of our most important information about the very edges of our solar system.