News – Page 203 – Astronomy Now

Why isn’t the universe as bright as it should be?

4 March 2015 Astronomy Now

Researchers from MIT, Columbia University, and Michigan State University have developed a theory describing how clusters of galaxies may regulate star formation, explaining why galaxies don’t churn out as many stars as they should.

Wayward star cluster Kim 2 located far from home in the Galactic suburbs

4 March 2015 Astronomy Now

Researchers conducting the Stromlo Milky Way Satellites Survey at the Australian National University discover a small star cluster that is about ten times more distant than the average globular in the halo of the Milky Way.

Rosetta glimpses its own shadow on comet 67P

4 March 2015 Stephen Clark

The sharp-eyed science camera on Europe’s Rosetta comet orbiter caught a view of the probe’s fuzzy shadow when controllers guided the spacecraft just a few miles over its subject’s nucleus last month.

Wind-distorted wave creates huge Y-shaped features in Venusian clouds

3 March 2015 Astronomy Now

When observed in the ultraviolet, Venus’ atmosphere is covered by dark Y-shaped structures whose origin and evolution has been a mystery since their discovery more than half a century ago. Now astronomers in Spain and Portugal have described the mechanism that sustains this phenomenon.

NASA spacecraft nears historic arrival at dwarf planet Ceres

2 March 2015 Astronomy Now

NASA’s Dawn spacecraft has returned new images captured on approach to entering orbit around Ceres on Friday, March 6th — the first mission to successfully visit a dwarf planet.

An old-looking, dusty galaxy in a young universe

2 March 2015 Astronomy Now

One of the most distant galaxies ever observed, A1689-zD1, has provided astronomers with the first detection of dust in such a remote star-forming system and tantalising evidence for the rapid evolution of galaxies after the Big Bang.

MUSE looks deeper into the universe than Hubble in 3-D

2 March 2015 Astronomy Now

The MUSE instrument on ESO’s Very Large Telescope has given astronomers the best ever three-dimensional view of the deep universe. The new observations of the Hubble Deep Field South reveal the distances, motions and other properties of far more galaxies than ever before in this tiny piece of the sky.

Life ‘not as we know it’ possible on Saturn’s moon Titan

1 March 2015 Astronomy Now

Liquid water is a requirement for life on Earth, but on much colder worlds life might exist beyond the bounds of water-based chemistry. Researchers at Cornell University offer a template for life that could thrive in the cryogenic seas of Titan, Saturn’s largest moon.

Curiosity rover drills rock sample at Mount Sharp

28 February 2015 Astronomy Now

NASA’s Curiosity Mars rover has used its drill to collect sample powder from inside a rock target called “Telegraph Peak.” Examining rock samples like these will help scientists understand how the ancient wet environment of Mars dried up.

Astronomers find newborn stars at the edge of the Galaxy

28 February 2015 Astronomy Now

Using survey images from NASA’s Wide-field Infrared Survey Explorer, astronomers have discovered two clusters of stars forming thousands of light-years below the galactic disc — a stellar nursery in what seems to be the middle of nowhere.