Articles on Universe

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Part of the new map of dark matter made from gravitational lensing measurements of 26 million galaxies in the Dark Energy Survey. Chihway Chang/University of Chicago/DES collaboration

What a new map of the universe tells us about dark matter

We still can't see the dark matter thought to make up about a quarter of the universe, but at least now we have a map of its structure.
In the beginning, the Universe expanded very, very fast. Flickr/Jamie

Curious Kids: what started the Big Bang?

What caused the Big Bang is still a mystery. And that's just one of the many unanswered questions, in spite of everything we do know about the birth of the Universe.
The Andromeda Galaxy, just part of a finely tuned universe. Flickr/NASA, ESA, J. Dalcanton, B.F. Williams, and L.C. Johnson (University of Washington), the PHAT team, and R. Gendler

Book review: Do we live in A Fortunate Universe?

A new book explores some of the big questions of why the universe exists and why it seems fine-tuned for life.
An illustration showing the merger of two black holes and the gravitational waves that ripple outward. LIGO/T. Pyle

Second detection heralds the era of gravitational wave astronomy

The observation of gravitational waves from a second black hole merger implies there are many more black holes in the universe than scientists had previously anticipated.

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