Εμφάνιση αναρτήσεων με ετικέτα αστερισμός του Δράκοντα. Εμφάνιση όλων των αναρτήσεων
Εμφάνιση αναρτήσεων με ετικέτα αστερισμός του Δράκοντα. Εμφάνιση όλων των αναρτήσεων

Παρασκευή 12 Αυγούστου 2011

Coal-Black Alien Planet Is Darkest Ever Seen

The distant exoplanet TrES-2b, shown here in an artist's conception, is darker than the blackest coal. This Jupiter-sized world reflects less than one percent of the light that falls on it, making it blacker than any planet or moon in our solar system.
CREDIT: David A. Aguilar (CfA)
   
An alien world blacker than coal, the darkest planet known, has been discovered in the galaxy.
The world in question is a giant the size of Jupiter known as TrES-2b. NASA's Kepler spacecraft detected it lurking around the yellow sun-like star GSC 03549-02811 some 750 light years away in the direction of the constellation Draco.

The researchers found this gas giant reflects less than 1 percent of the sunlight falling on it, making it darker than any planet or moon seen up to now.  [The Strangest Alien Planets]