Earth and Mars began side by side, but their volatile elements reveal sharply different paths from dust and rock to finished ...

Earth and Mars emerged from the same young solar system around 4.5 billion years ago, yet they may have been assembled ...

Earth and Mars may have started from the same cosmic cloud, but a new study explains how their formation took different paths ...

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

Earth and Mars formed about 4.5 billion years ago from the same swirling cloud of gas and dust. But a new study suggests ...

Protoplanets and planetesimals are both planetary building blocks, but they differ in size. Planetesimals are solid, ...

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

Celestial bodies in the solar system can be compared from various perspectives, such as size, temperature, and atmosphere.

Previous research pointed to copious amounts of dust atop the arctic Martian wasteland, but a clearer picture is coming into ...

"In contrast, roughly three-quarters of Mars's mass appears to come from planetesimals, with the remaining quarter ...

Deep Nullarbor caves slowly collapsed and left shallow trenches behind, clues that may help geologists spot buried caves, ...

Uncrewed vehicles like the Perseverance and Curiosity rovers (as well as orbiters) have for years captured stunning photos of Mars. Here are the latest.