NASA’s Curiosity rover discovered siderite in Gale Crater. This shows Mars had a partial carbon cycle, storing and releasing ...

Earth grew to its final size through one last major collision with another Mars-sized object. This last collision, also known as the “moon-forming impact,” was so large that—in addition to adding lots ...

This mission is not just about SpaceX, but about humanity’s potential to break free from Earth’s gravity ... astronauts arrive on Mars, Optimus will be the first to set foot on the Red Planet.

no human has ever set foot there. Various missions by the world’s space agencies plan to change this in the coming decades. Mars is smaller than Earth. It has a diameter of roughly 4,222 miles ...

A new study has revealed that lichens can withstand the intense ionizing radiation that hits Mars' surface. (The lichen in this photo is Cetraria aculeata.). | Credit: Pensoft Earth-based ...

Scientists have uncovered geological evidence indicating that the gravitational interplay between Mars and Earth triggers a 2.4-million-year cycle of deep-sea circulation and warming of our planet ...