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

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

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

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

Chemical clues in Earth and Mars suggest their different formation histories may explain why the neighbouring planets evolved ...

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

During the formation of the Solar System Mars, the fourth planet from the Sun, was repeatedly struck by planetesimals (these are small protoplanets no larger than 1,200 miles in diameter). A few ...