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

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

HD 20794 d completes its orbit just shy of two Earth years, placing it well within reach of conditions that might harbor life ...

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

Earth" planet found outside of our solar system could have conditions suitable for life, according to experts at the ...

The planet is outside our solar system and has a mass six times greater than that of Earth. The discovery is of an exoplanet, this is any planet beyond our solar system, most of them orbit other ...

The exoplanet, which has been named HD 20794 d, orbits in the ‘habitable zone’ of a nearby star similar to our sun.

A planet-size object that possibly once visited the solar system may have permanently changed our cosmic neighborhood by warping the orbits of the four outer planets, a new study suggests.

A shortcut for New Yorkers to spot some of the planets is to look for them when they are near the moon. On Feb. 1, Venus will ...

Scientists have discovered a ‘super-Earth’ planet six times larger than our own which may have conditions suitable for life.

Huge breakthrough in the search for aliens: NASA discovers a 'super Earth' exoplanet just 20 light-years away that could have the right conditions to support life For millennia, humans have asked ...