Mercury is the closest planet to the sun, followed by Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Mercury orbits ...

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

While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

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.

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

Tonight and throughout January, stargazers can see a planetary alignment in the night sky or what some are calling a ...

Six planets are parading across the sky, appearing as some of the night's brightest stars. A few easy tips can help you ...

When you first learned about the Solar System, you probably saw diagrams that made it look orderly, with planets arranged in ...

STARGAZERS are in for a treat this month as a rare planet parade falls in Andromeda galaxy season. “One of the best planet ...

The article humorously imagines how planets would describe themselves if they were dating profiles. Each planet has a unique ...

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's ...