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

Long ago, a planetary object eight times the mass of Jupiter may have once visited the solar system and altered […] The post ...

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

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

Worlds will align for a "planetary parade" in January, with four bright and easily visible to the naked eye. But an even ...

Starting at 12:30 p.m. ET (1730 GMT) on Saturday (Jan. 25), astrophysicist Gianluca Masi of the Virtual Telescope Project ...

A planet that may support alien life has been discovered less than 20 light-years from Earth. The "promising" super-Earth - ...

Simpson and Chen ran mathematical models looking at how differently sized Earth-like worlds would have affected the rest of ...

Astronomers have discovered extremely powerful winds pummeling the equator of WASP-127b, a giant exoplanet. Reaching speeds ...

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

Planets with suns like Wolf 359 are subject to huge blasts of radiation that raise questions about their long-term ...

Although it's being mistakenly promoted as a "rare planetary alignment," one of the best "planet parades" in half a century ...