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Thursday December 4th 2014

‘Featured Articles’ Archives

A Sense of Planetary Scale

A Sense of Planetary Scale

A great video showing what it would be like if different planets in out solar system shared an orbit with our Moon. Scale from Brad Goodspeed on Vimeo.

Millions of Stars in Omega Centauri

Millions of Stars in Omega Centauri

The best way to see this image of globular star cluster Omega Centauri (NGC 5139) is to look at the large version. The sheer number of stars is staggering.  NGC 5139 is some 15,000 light-years away and 150 light-years in diameter. Packed with about 10 million stars much older than the Sun, Omega Cen is the largest of 200 or so known globular [...]

Wide Angle: The Cat’s Paw Nebula

Wide Angle: The Cat’s Paw Nebula

Nebulae are perhaps as famous for being identified with familiar shapes as perhaps cats are for getting into trouble. Still, no known cat could have created the vast Cat's Paw Nebula visible in Scorpius. At 5,500 light years distant, Cat's Paw is an emission nebula with a red color that originates from an abundance of ionized hydrogen atoms. [...]