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

Asteroid Bennu seems to have come from a long-lost world on the fringes of the solar system, where saltwater pooled and dried ...

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

Samples of Bennu were brought back to Earth by NASA’s OSIRIS-REx spacecraft in 2023. Now, a pair of newly published papers ...

Astronomers have found two planets around two separate stars that are succumbing to their stars' intense heat.

Astronomers have found two planets around two separate stars that are succumbing to their stars’ intense heat. Both are ...