While these arid regions seem more believable as livable planets than mountain-high walls of water, are they actually realistic? Is it possible for sci-fi planets like Tatooine to bear native life ...

But, just how realistic would it be for interstellar travelers to have inaccurate maps, leading to missing or hidden planets? When you dig into the the actual science of star mapping the answer is ...

the flybys that had previously altered the giant planets' orbits to their present states recreated the solar system's current appearance. The simulation that produced the most realistic results ...

Stargazers will be treated to a dazzling six-planet "alignment" this January. A planetary alignment, or a "planet parade" according to the internet, will grace our night sky just after dusk ...

Yes, six planets will be visible in the January night sky. And yes, they'll be in a line. But because planets always appear in a line from our Earth-bound vantage, the alignment isn't anything out ...

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

For much of January and February, you have the chance to see six planets in our solar system after dark, although two — Uranus and Neptune — will be tough to see without a telescope or high ...

Six planets are aligning with four visible to the naked eye in late January. Here's how to find them in Michigan.

A parade of planets will be visible to skywatchers around the globe through the rest of this month and into February. At least four planets — Venus, Jupiter, Mars and Saturn — should be ...

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.

Michigan stargazers with the fortitude to spend time outside this month are in for a treat. Six planets will "align" in the sky for a planet parade, with four of them visible to the naked eye ...