Giant ring of black holes

(PhysOrg.com) -- Just in time for Valentine

First ever STEREO images of the entire Sun

First ever STEREO images of the entire Sun

Bigelow to lease space habitats to clients in seven nations

Bigelow Aerospace has announced plans to lease space aboard its inflatable space habitats to seven clients in The Netherlands, Sweden, Japan, Singapore,

First Mission to Mercury

As the team of scientists behind NASA’s MESSENGER spacecraft eagerly awaits the craft’s entry into Mercury’s orbit on 17 March, we could soon get answers to questions about the origin, composition, interior structure and geological history of this mysterious planet.

Six small planets orbiting a sun-like star amaze astronomers

(PhysOrg.com) -- A remarkable planetary system discovered by NASA

Global eruption rocks the Sun: scientists re-evaluate ideas about solar storms

On August 1, 2010, an entire hemisphere of the sun erupted. Filaments of magnetism snapped and exploded, shock waves raced across the stellar surface, billion-ton clouds of hot gas billowed into space. Astronomers knew they had witnessed something big. It was so big, it may have shattered old ideas about solar activity.

For fully mature black holes, time stands still

The end state of a black hole may be a mind-bending kind of spacetime independent of time, scientists say.

The Orion nebula: still full of surprises

This ethereal-looking image of the Orion Nebula was captured using the Wide Field Imager on the MPG/ESO 2.2-metre telescope at the La Silla Observatory, Chile. This nebula is much more than just a pretty face, offering astronomers a close-up view of a massive star-forming region to help advance our understanding of stellar birth and evolution. The data used for this image were selected by Igor Chekalin (Russia), who participated in ESO’s Hidden Treasures 2010 astrophotography competition. Igor’s composition of the Orion Nebula was the seventh highest ranked entry in the competition, although another of Igor’s images was the eventual overall winner.

Close-knit pairs of supermassive black holes discovered in merging galaxies

Astronomers have discovered 16 close-knit pairs of supermassive black holes in merging galaxies. These black-hole pairs, also called binaries, are about a hundred to a thousand times closer together than most that have been observed before, providing astronomers a glimpse into how these behemoths and their host galaxies merge -- a crucial part of understanding the evolution of the universe.