The physical process likely behind this cloud's formation has never been observed in a planetary atmosphere before.

Earth and Mars may be close neighbors today, but scientists say the two planets took different routes during their formation.

Astrophysicist Jorge Hernández Bernal first spotted the cloud in an otherwise clear sky in 2018. Images by the European Space ...

Although Mars may have once resembled Earth, the rocky red planet now appears far from hospitable. Still, certain ...

Scientists have finally solved one of Mars's most perplexing mysteries: the puzzle of an 'impossible' giant cloud.

In 1976, NASA’s Viking 1 orbiter captured a strange image over Mars’ Cydonia region a rock formation that looked uncannily ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A rare dawn conjunction on Saturday, July 4, brings fourth ...

The condition of Mars’ polar ice could offer new clues about the Red Planet’s past and whether it was ever suitable for life.

Earth and Mars may have formed through different mixtures of planetary building processes, despite developing side by side.

Four and a half billion years ago, Earth and Mars were born in the rotating cloud of gas and dust that would eventually ...

Mars is famous for its red dust. So it’s easy to guess that the frozen water near its north pole is grimy, too.

Mars’ north polar ice cap has been found to be much more pristine than had been thought, containing less dust that changes ...