Astrophysics

Excess gamma-ray light at the galactic center may indicate invisible dark matter particles
 

The stars in the nearby Segue 1 dwarf galaxy have fewer metals than any other galaxy known, suggesting the object is a relic from the baby universe
 

Gas from another galaxy is hitting our own, triggering the birth of bright new stars and adding fresh luster to the Milky Way

It’s not usually put like this, but the discovery of primordial gravitational waves two weeks ago has given us our first direct glimpse of a period before the big bang.

A decades-old paradox returns

The BICEP2 experiment’s potential discovery of spacetime ripples may provide support for the concept of many universes, but critics are unconvinced
 

The big bang findings strengthen the case for the multiverse and all but rule out a "cyclic universe"

Do yourself a favor. Don't read this article just yet--first, take a moment to zoom around this incredible panorama of our galaxy and soak in the splendor: http://www.spitzer.caltech.edu/glimpse360/aladin.

The director of the Max Planck Institute for Gravitational Physics talks about the news this week of indirect evidence for gravitational waves and his work to obtain direct evidence

Lead discoverer John Kovac describes his work at the BICEP2 radio telescope and how his career took him there

A curved signature in the cosmic microwave background light provides proof of inflation and spacetime ripples
 

The first sighting of the light spectacle on another planet reveals properties of the mysterious Venusian clouds