Friday, April 26, 2013

ScienceDaily: Stars News

ScienceDaily: Stars News

Einstein's gravity theory passes toughest test yet

Posted: 25 Apr 2013 11:22 AM PDT

A strange stellar pair nearly 7,000 light-years from Earth has provided physicists with a unique cosmic laboratory for studying the nature of gravity. The extremely strong gravity of a massive neutron star in orbit with a companion white dwarf star puts competing theories of gravity to a test more stringent than any available before.

Entire galaxies feel the heat from newborn stars: Bursts of star birth can curtail future galaxy growth

Posted: 25 Apr 2013 07:33 AM PDT

Astronomers have shown for the first time that bursts of star formation have a major impact far beyond the boundaries of their host galaxy. These energetic events can affect galactic gas at distances of up to twenty times greater than the visible size of the galaxy -- altering how the galaxy evolves, and how matter and energy is spread throughout the Universe.

TRAPPIST participated in the detection of ten percent of all transiting exoplanets known to date

Posted: 25 Apr 2013 07:32 AM PDT

Among the many planets detected orbiting other stars (exoplanets) over the last twenty years, a little less than three hundred periodically pass in front of their star. This is what astronomers call a planetary transit. Exoplanets that "transit" their stars are key objects for the study of other planetary systems, because they are the only planets beyond our solar system that can be studied in detail, both in terms of their physical parameters (mass, radius, orbital parameters) and their atmospheric properties (thermal structure, dynamics, composition).
Posted by at

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)