The SPT team focuses on galaxy clusters because they are the largest structures in the universe, often consisting ... Mexico aims a pulse of light at the Moon, 239,000 miles away.

Earth may be huge to us, but it's only a tiny part of our Milky Way Galaxy, which is just a small part of the universe. In ...

Using the Dark Energy Spectroscopic Instrument, or DESI, scientists have assembled the largest three-dimensional map of the universe to date. Earth is at the center in this animation. New data ...