A planet parade is when several of our solar system's planets are visible in the night sky at the same time. There will be ...

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

"A parade of planets, also sometimes referred to as a planetary alignment, is when several planets in our solar system appear to line up in the sky from our perspective here on Earth," John Conafay, ...

In the depth of winter, a sweeping view of our solar system will glow in the night sky. In total six planets will be visible, ...

A parade of planets will be visible to skywatchers around the globe through the rest of this month and into February.

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 ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...

Because the period of an object does not depend on its mass, comets’ orbital periods remain unchanged due to mass loss.

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

Research by astronomers, led by the University of Geneva (UNIGE), challenges current theories about the formation of ...

Pluto may have got romantic to capture its largest moon, colliding and engaging in a passionate but icy 10 hour kiss with ...

Two significant additional discoveries-the identification of twin water worlds, Kepler-138c and d, and the existence of water ...