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

Experts told Newsweek about the difficulties of reaching Mars as the United States faces complex challenges in space policy.

A world-leading designer of space robots says gigantic new rockets being tested by billionaires Elon Musk and Jeff Bezos are ...

Mars' southern hemisphere absorbs a lot of the sun's energy during the Red Planet's spring, and that may be causing Mars' ...

The area containing the clay-bearing mounds is geologically connected to Oxia Planum, which is where Rosalind Franklin will ...

The 3.7-billion-year-old formations in the planet's Gale Crater suggest the presence of long-gone bodies of liquid water, ...

Less than 24 hours after the International Astronomical Union’s Minor Planet Center announced the discovery of a new asteroid ...

During his inaugural address, President Donald Trump said he wants 'American astronauts' on Mars. Where does a future Mars ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – here’s how to spot the celestial show ...

President Donald Trump made a bold promise to America minutes after taking the Oath of Office: pledging that an American flag ...

Trump says we're going to Mars. He may be making it harder to get there. President Donald Trump says we’re going to Mars, but ...

Images of Mars taken from orbit show thousands of mounds in a region sculpted by water billions of years ago. A robotic ...