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Space6902 articles archived since 1845

Cosmic Inflation Theory Faces Challenges

The latest astrophysical measurements, combined with theoretical problems, cast doubt on the long-cherished inflationary theory of the early cosmos and suggest we need new ideas

January 20, 2017 — Anna Ijjas, Paul J. Steinhardt and Abraham Loeb

Is It Time to Give Up on Dark Matter?

There is still good reason to think undiscovered fundamental particles act as gravitational glue for galaxies.

January 17, 2017 — Lydia Chain, Lee Billings and Michael Lemonick

Stand Up for Science Journalism!

Staying informed has never been more important.