Thursday, June 27, 2013

ScienceDaily: Stars News

ScienceDaily: Stars News

First transiting planets in a star cluster discovered

Posted: 26 Jun 2013 01:28 PM PDT

All stars begin their lives in groups. Most stars are born in small groups that quickly fall apart. Others form in huge, dense swarms, where stars jostle with thousands of neighbors while strong radiation and harsh stellar winds scour interstellar space, stripping planet-forming materials from nearby stars. It would thus seem an unlikely place to find alien worlds. Yet 3,000 light-years from Earth, in the star cluster NGC 6811, astronomers have found two planets smaller than Neptune orbiting sun-like stars.

Survivor of stellar collision is new type of pulsating star

Posted: 26 Jun 2013 11:28 AM PDT

Astronomers have observed the remnant of a stellar collision and discovered that its brightness varies in a way not seen before on this rare type of star. By analyzing the patterns in these brightness variations, astronomers will learn what really happens when stars collide.

Astronomers spy on galaxies in the raw

Posted: 26 Jun 2013 08:36 AM PDT

A radio telescope has detected the raw material for making the first stars in galaxies that formed when the Universe was just three billion years old -- less than a quarter of its current age.
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