NASA’s Psyche spacecraft will fly close to Mars on Friday in a crucial manoeuvre that could bring scientists closer to understanding the birth of Earth. The flyby will use Mars’s gravity to send the ...

Blue oceans, green forests, a cozy blanket of oxygen. Our planet is a super comfy home. It’s hard to imagine there was ever a time it didn’t exist. I asked my friend Julie Ménard how Earth formed. She ...

Earth is so far the only known planet on which life exists—with liquid water and a stable atmosphere. However, the conditions were not conducive to life when it formed. The gas-dust cloud from which ...