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

Astronomers have discovered that sulfur may be a key to helping us narrow down our search for life on other planets. It's not that sulfur is a great indication that a planet is inhabited. Instead, ...

After dusk on Friday night, seven planets are expected to align in the night sky. But you'll need binoculars or a telescope ...

Observers could see up to seven planets line up in the sky after sunset on Friday, but you may need a telescope to see them ...

In our solar system, Venus lies near the inner edge of the habitable zone with surface temperatures exceeding 800 degrees Fahrenheit beneath a dense atmosphere, while Mars resides primarily ...

With an orbit of 647 days, HD 20794 d is similar to Mars in our solar system. However, its orbit around the star is highly ...

Mercury is a scorched rock too close to the sun, Venus' atmosphere is dry and toxic, and the others in our solar system are either made of gas or very far from the sun. So, apart from Mars ...