One of the oldest unsolved riddles in planetary science concerns the origin of the moon. Over a century ago, George Darwin ...

Normal matter – which makes up everything we see and touch – isn’t the only type of matter present in the universe.

An international research team reports the discovery of "hidden order" in systems that are disordered in space and time. The ...

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