If future Mars colonizers want to survive without pressure suits, they’ll need to generate a denser atmosphere. One way to ...

A nuclear explosion might eventually be Earth’s only way to protect itself from a dangerous asteroid. But preparing for that ...

NASA’s Lucy spacecraft will swoop past a small asteroid this weekend as it makes its way to an even bigger prize: the ...

Asteroids represent a serious hazard to Earth, past, present, and future, but will be even more of a concern to humanity as ...

Much of what scientists know about the early solar system comes from meteorites—ancient rocks that travel through space and survive a fiery plunge through Earth's atmosphere. Among meteorites, one ...

NASA has defined asteroids as small, rocky objects that orbit the sun like planets, but they are much smaller in size. Most ...

It has long been suspected that carbonaceous materials are too weak to survive the fiery plunge through the atmosphere. But ...

Small fossils show mammals moved to the ground before the dinosaurs vanished. New plants changed habitats, giving better food ...

Of all the asteroids that become meteoroids by striking Earth's surface, only 4% contain abundant carbon. But scientists know ...

similarly water-rich asteroid. Together these missions have let planetary scientists like me study pristine, fragile carbonaceous material from asteroids. These asteroids are a direct window into the ...

The asteroid is shaped like a hockey puck and is about the size of a football field in diameter which is about 60m.