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

FOUR planets are visible in the night sky. You will have to battle January clouds, but here is how to find them.

New research reveals ancient ripples on Mars, providing compelling evidence of long-lost lakes that once existed 3.7 billion ...

The United States will once again consider itself a growing nation, one that increases our wealth, expands our territory, ...

With frigid temperatures and dangerously cold wind chills, you may want to wait a few more days to check them out. Don't ...

Stargazers are in or a treat as six planets - Venus ... Evidence of ancient hot water activity on Mars has been found in a 4.45-billion-year-old zircon grain from the NWA7034 meteorite.

Images of Mars taken from orbit show thousands of mounds in a region sculpted by water billions of years ago. A robotic mission may investigate the area one day.