Mars is the fourth planet from the sun and has a distinct rusty red appearance and two unusual moons. The Red Planet is a ...

The rusty world is full of mysteries—and some of the solar system's most extreme geology. Learn more about Earth's smaller, colder neighbor.

A person standing on the largest volcano in the solar system would never know it. Olympus Mons rises 70,000 feet over Mars on slopes too gentle to notice, and its summit pokes above most of the planet ...

A newly published study in Science Advances has uncovered compelling evidence that the solar wind is doing far more than ...

For the first time, water frost has been detected on the colossal volcanoes on Mars, which are the largest mountains in the solar system. The international team led by the University of Bern used high ...

This summer, scientists spotted an incredibly rare visitor to Earth’s solar system—a comet, now known as 3I/ATLAS, that entered our solar system from the galaxy beyond and is zipping past the sun at a ...

Add Yahoo as a preferred source to see more of our stories on Google. The solar storm increased the number of electrons in two layers of the Martian atmosphere: A 45% increase at an altitude of 68 ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A tiny black hole may pass through our solar system once every ten or ...

Add Yahoo as a preferred source to see more of our stories on Google. While we earthlings prepare for a rare total solar eclipse that will pass over North America, Mars had one of its own earlier this ...

Pioneer Astronautics has conducted a successful dynamic test of its Mars solar balloon inflation system. The experiment, performed at an altitude of 116,000 ft over Kuner Colorado on September 26, was ...

The average vacation requires a budget, a suitcase and maybe a passport. SpaceX CEO Elon Musk is talking about budgeting for the moon, Mars and, eventually, destinations beyond the solar system.