Over 4.6 billion years ago, Earth took shape from a spinning cloud of dust and gas surrounding the young sun. Tiny particles within this cloud collided and clumped together, driven by gravity and ...

Most scientists agree that a major collision 4.5 billion years ago with a protoplanet named Theia formed the Earth-Moon system. Now, a new study from the University of Nevada argues that, out of the ...

If you were hoping to see the “mini moon,” you’ve probably been disappointed. But experts say the asteroid was an important milestone in planetary defense research. Though there are hundreds of moons ...

2024 PT5, Earth’s newest mini-moon, is expected to go into orbit of Earth for a couple of months from Sept. 29, 2024. Update, Oct. 9, 2024: A link to a map of asteroid 2024 PT5’s orbit around the sun ...

Earth, sun, moon: three objects in space whose interactions have a pretty big impact on our lives. Earth orbits the sun once a year, and it rotates on its axis about once a day (depending on your ...