Cosmology

Interactions of Higgs bosons and anti-Higgs in the early universe may also have caused the observed asymmetry between matter and antimatter

In this excerpt from Five Billion Years of Solitude author Lee Billings chronicles the pioneering scientists who have led the hunt for extraterrestrial intelligence in their quest to answer the haunting question: Is humanity alone in the universe?

Mysterious dark matter is responsible for our existence in the Milky Way galaxy, as revealed in this video for a new show at New York City’s Hayden Planetarium

The Fermi Gamma-Ray Space Telescope team is considering a new observing strategy that would focus on the center of the galaxy

New observations suggest the small world's air never vanishes

Anomalies in the universe's relic radiation could contradict the evidence for a level cosmos

Researchers calculate that the planet will leave the sun's "habitable" zone in about 1.75 billion years

Force-carrying "gravitons" with mass could help to explain the universe's accelerating expansion

A budget struggle has the world's largest steerable radio telescope making sacrifices in the name of science

If particles of light have mass, a small but distinct possibility, they may not live forever—and some fundamental theories would have to be modified, too

The B-mode polarization signal provides a way for astronomers to calculate neutrino masses, as well as to chase a class of "primordial" B-modes that could be used to confirm inflation

Theory said that muon neutrinos could transform into electron neutrinos. A neutrino detector confirms this by catching many more electron neutrinos than it should have otherwise. John Matson reports