Following the 7-planet alignment, Mars will be visible in the sky in March. Here's everything you need to know about this ...

A space probe named Hera captured images of Mars' small Deimos moon while on a mission to examine an asteroid.

Within the next decade, space agencies plan to bring samples of rock from Mars to Earth for study. Of concern is the possibility these samples contain life, which could have unforeseen consequences.

Mars' atmosphere moves differently from Earth's due to gravity waves. These waves affect air circulation at high altitudes.

The best opportunity to potentially see all seven planets is coming up on Feb. 28 around 6:10 p.m. ET, according to Shanahan. Mercury, which is the closest planet to the sun, would be the first to be ...

Mars will remain prominent all evening, despite the fact that it will continue to fade slowly in the days and weeks to come as it gradually pulls away from the Earth. When the moon passes it by on ...

Worldwide, the best day to see the alignment is today, Feb. 28. Mercury, Venus, Mars, Jupiter ... in the solar system orbit the sun, just as Earth does. Every planet orbits at a different speed ...

When a mudflat crumbles on Earth, or an ice sheet splinters on one of Jupiter's moons (Europa), or an ancient lakebed breaks ...

A spectacle for stargazers to admire will take place in the night sky this evening, March 8. Mars will have a close encounter ...