Mars orbiter spots shifty activity on the Red planet's surface

Ah, springtime: fresh flowers, fuzzy ducklings and, on Mars, the sublimation of dry ice from the surfaces of the planet

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.

Astronomers release the largest color image of the sky ever made

Astronomers have produced the largest-ever map of the sky. This survey has made it possible to build an image from which a source catalog of unprecedented quality covering a large fraction of the sky has been extracted in five colors (sky cover, depth and precision of luminosity measurements). This catalog, which contains around 470 million objects (galaxies, stars, quasars, etc.), is now being published.

Dark-matter galaxy detected: hidden dwarf lurks nearby?

Galaxy X: An entire galaxy—made mainly of dark matter—may be lurking just outside our own, scientists say.

Super-massive black holes began growing when universe was very young

The most massive black holes began growing at a very fast rate when the universe was only about 1.2 billion years old, according to a new study by astronomers in Tel Aviv.