The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Using clever light-detecting techniques, ExTrA searches red dwarf stars for planets that might support life. By studying tiny ...

The building blocks of life could have been delivered to Ceres by one or more space rocks from the outer asteroid belt.

The organic material on the dwarf planet Ceres is probably of extra-Ceresian origin: a recent study concludes that asteroids from the outer asteroid belt that crashed into the dwarf planet brought ...

Scientists studying samples that NASA collected from the asteroid Bennu found a wide assortment of organic molecules that ...