News tagged with ultraviolet radiation

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Star birth in Cepheus

(Phys.org) —Watching starbirth isn't easy: tens of millions of years are needed to form a star like our Sun. Much like archeologists who reconstruct ancient cities from shards of debris strewn over time, ...

Apr 01, 2013 not rated yet 2 | with audio podcast

The wings of the Seagull Nebula

(Phys.org)—This new image from ESO shows a section of a cloud of dust and glowing gas called the Seagull Nebula. These wispy red clouds form part of the "wings" of the celestial bird and this picture reveals ...

Feb 06, 2013 5 / 5 (3) 0 | with audio podcast

Making stars in early galaxies

(Phys.org)—Ten billion years ago or so, at least according to the current picture, the youthful universe began to produce an abundance of new stars. The very first ones appeared in the young cosmos after ...

Dec 10, 2012 not rated yet 0

A new class of extragalactic objects

A blazar is a galaxy with an intensely bright central nucleus containing a supermassive black hole, much like a quasar. The difference is that a blazar can emit light with extremely high energy gamma rays ...

Oct 29, 2012 3.9 / 5 (14) 1 | with audio podcast