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 ...

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

Uranus and Neptune are there too, technically, but they don't appear as 'bright planets'," NASA's Preston Dyches explained in a stargazing video guide. Stock illustration of all the solar system's ...

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

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.

"A parade of planets, also sometimes referred to as a planetary alignment, is when several planets in our solar system appear ...

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 ...

According to the most widely held astronomical model (the nebular hypothesis), new stars are born from massive clouds of dust ...