Mercury takes only 88 Earth days to orbit the sun.

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

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

A planetary alignment, or a "planet parade" according to the internet, will grace our night sky just after dusk, according to ...

A six-pack of planets will ... is seven or eight if Pluto is in the mix. However, these luminaries are not always in the same direction or sector — but are flung around the solar system and ...

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

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but get a telescope and you can spot Neptune and Uranus.