In the swirling clouds of gas and dust that surround newborn stars, planets begin to form. These planet-forming disks are rich with clues about how worlds like Earth come to be. Until now, scientists ...

Young star systems are a place of violent collisions between rocks, comets, asteroids and larger objects as the dust and ice of a stellar nebula coalesce into planets and moons. But the largest ...

Our solar system passed through a vast wave of gas and dust around 14 million years ago, dimming Earth’s view of the night sky. The wave may even have left traces in our planet’s geological record.

Astronomers have made an incredible discovery of a large molecular cloud located just over 300 light-years from Earth that is invisible to the naked eye but detectable in the far-ultraviolet range of ...