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

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 were formed from material that largely originated in the inner Solar System; only a few percent of the building blocks of these two planets originated beyond Jupiter’s orbit. A group of ...

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

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

Humans love an origin story. And in space science, there is no greater question than why Earth is the vibrant, living planet we see today. As humans return to the heavens, understanding our planetary ...

This summer, scientists spotted an incredibly rare visitor to Earth’s solar system—a comet, now known as 3I/ATLAS, that entered our solar system from the galaxy beyond and is zipping past the sun at a ...

For the first time, water frost has been detected on the colossal volcanoes on Mars, which are the largest mountains in the solar system. The international team led by the University of Bern used high ...