Thursday, June 13, 2013

ScienceDaily: Astronomy News

ScienceDaily: Astronomy News

Mars water-ice clouds are key to odd thermal rhythm

Posted: 12 Jun 2013 12:58 PM PDT

Researchers using NASA's Mars Reconnaissance Orbiter have found that temperatures in the Martian atmosphere regularly rise and fall not just once each day, but twice.

NASA's Chandra turns up black hole bonanza in galaxy next door

Posted: 12 Jun 2013 12:40 PM PDT

Using data from NASA's Chandra X-ray Observatory, astronomers have discovered an unprecedented bonanza of black holes in the Andromeda Galaxy, one of the nearest galaxies to the Milky Way. Using more than 150 Chandra observations, spread over 13 years, researchers identified 26 black hole candidates, the largest number to date, in a galaxy outside our own. Many consider Andromeda to be a sister galaxy to the Milky Way. The two ultimately will collide, several billion years from now.

New kind of variable star discovered: Minute variations in brightness reveal whole new class of stars

Posted: 12 Jun 2013 06:37 AM PDT

Astronomers have found a new type of variable star. The discovery was based on the detection of very tiny changes in brightness of stars in a cluster. The observations revealed previously unknown properties of these stars that defy current theories and raise questions about the origin of the variations.

Sunny super-Earth? Atmosphere of super-Earth exoplanet observed for time first by two Japanese telescopes

Posted: 12 Jun 2013 06:35 AM PDT

Astronomers have observed the atmosphere of super-Earth "GJ3470b" for the first time using two telescopes. This super-Earth is an exoplanet, having only about 14 times the mass of our home planet, and it is the second lightest one among already-surveyed exoplanets. The observational data revealed that this planet is highly likely to NOT be covered by thick clouds.
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