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

New research suggests that a massive, unidentified object might have passed through our Solar System billions of years ago, ...

Planetary scale model trails are letting cycling enthusiasts pedal their way through the cosmos. These trails are designed ...

The enormous visitor to our solar system may have been about 8 times the mass of Jupiter, and come nearly as close to the sun ...

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

Planetary alignments aren't rare, but they can be when they involve six of the eight planets in our solar system.

A close encounter with a mysterious interstellar object could explain the current orbits of several of Earth’s largest ...

Stargazers will be treated to a rare alignment of seven planets on 28 February when Mercury joins six other planets that are already visible in the night sky. Here's why it matters to scientists.

Emily Simpson has loved space since she was a 10-year-old kid celebrating her birthday at a planetarium. Now a recent Florida ...

The James Webb Space Telescope has provided groundbreaking insights into a new type of exoplanet, fundamentally different ...