There are two small moons in orbit around Mars today, but both may be remnants of a much larger moon that had enough of a ...

Planetary scientist Tom Van Flandern argued that the solar system did not form the way it was taught in schools. He believed ...

Mars looks quiet today, but new research suggests the planet’s surface still carries the rhythm of a vanished companion.

Regular, alternating layers in Gale Crater may have been deposited as the result of tides raised by a moon at least 18 times ...

A consortium of American scientists and engineers filed a report that stridently makes the case for putting boots down on ...

A guide to the Capricorn moon sign in your birth chart, including what it reveals about your personality traits, love life, ...

The picture-perfect launch of twin Escapade orbiters bound for Mars presages a fantastical new age in exploring the planets, powered by a revolution in reusable rockets.

Tracking the first astronauts’ visit to Mars won’t be as simple as watching a clock or marking days off of a calendar. Thanks ...

Scientists find that time on Mars runs 477 microseconds faster than on Earth, a discovery that could enhance deep-space communication and future exploration ...

This temporal lag is a direct consequence of Albert Einstein’s Theory of General Relativity. The rule is simple: the weaker ...

One mission would involve a full 300 sols on the Red Planet, with the goal of finding extinct or current life on Mars. But ...

Even worse, the orbit of Mars is elliptical (think of a slight oval rather than a perfect circle), which means that sometimes ...