Mars' southern hemisphere absorbs a lot of the sun's energy during the Red Planet's spring, and that may be causing Mars' ...

The atmospheres of the terrestrial planets range from thin to thick. Mercury has almost no atmosphere. A thick atmosphere made mostly of carbon dioxide covers Venus, trapping heat and raising ...

But later – hundreds of millions of years in the future – a permanent, virtually ringless Saturn will become real, thanks to another process called ring rain in which gravity pulls the rings apart and ...

Prof David Charbonneau, also from Harvard University, said the fact that K2-18b's atmosphere was detected was proof in itself that it could not support life. "If the planet had a thin secondary ...

Mercury is the underdog planet. It's the smallest guy in the ... an orbiting telescope back in the '90s that Ceres may have a thin atmosphere. But the most exciting thing about Ceres is we think ...

Each planet has its own unique characteristics, such as size, composition, and atmosphere. For instance, Uranus is known as the green planet due to its methane-rich atmosphere. But do you know which ...

The fact that the cold, dry Mars of today had flowing rivers and lakes several billion years ago has puzzled scientists for ...

From January to March, the night sky will host a spectacular parade of planets featuring Venus, Mars, Jupiter, Saturn, Uranus ...

Mercury and Venus are both rocky planets. Mercury is closest to the Sun, so it gets very hot during the day. But it has a very thin atmosphere which does not hold on to any heat, so it gets very ...