"With an orbital period of 570 days, it is a relatively cold gas giant planet," said Guðmundur Stefánsson of the University ...

There are eight planets in the solar system, and each travels on its own path around the sun. But of these planets, which is nearest to the sun? Mercury is a strange little world. There are some ...

Helium can help scientists detect the speed and direction at which we’re moving through space. Deuterium, which is left over ...

SCIENTISTS have discovered a new super-Earth with an ‘eccentric’ orbit that swings it in-and-out of its star’s habitable zone ...

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 before shoving four of the solar system's planets onto a different course.

A planet that may support alien life has been discovered less than 20 light-years away from Earth - and it's believed to ...

Our sun and its planets arose when the universe was about 9 billion years old, and the oldest known planet developed 1 billion years into the life of the universe. Receive a weekly dose of ...

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