Most planetary systems were simple, but some formed around multiple stars. This video explained how a planet could orbit an entire seven-star system without being torn apart. The key was hierarchy, ...

Smooth filaments stretching for many light-years, seen by the powerful space telescope, could indicate what the right "recipe ...

The rings of Saturn are normally thought to be flat, but measurements by the Cassini spacecraft show that some of their ...

The fundamental nature of living things challenges assumptions that physicists have held for centuries.

The Atacama Cosmology Telescope in Chile has released its final batch of data after 15 years — and it proves that the Hubble ...

One key component might be RNA, a molecular cousin of DNA found in every form of life on Earth, and now scientists say they have shown how it could have formed on our planet eons ago. But not everyone ...

Our universe is filled with galaxies, in all directions as far as our instruments can see. Some researchers estimate that ...

"A bit like dinosaurs on Earth — they were enormous and primitive. And they had short lives, living for just a quarter of a ...

The first exoplanet ever discovered in 1995 was what we now call a "hot Jupiter," a planet as massive as Jupiter with an ...