Arcturus Thought to Be from Another Galaxy

This is the Guardian Star iin the constellation Bootes, Arcturus. It is the alpha star or the brightest in the constellation. It is also called the Wanderer Star. Astronomers have long known that Arcturus is not like other stars in the Milky Way galaxy because it moves differently and does not have a typical chemical composition like the others. They have come to theorize that it and other like stars were once part of another smaller galaxy that the Milky Way assimilated. The photo is from John Chumack's astrophotography site. You can purchase the non-watermarked image as well as more of his photos here: http://www.galacticimages.com/catalog/Arcturus+photos+-+Alpha+Bootes+Photos

Thousands of Black Holes Photographed

Starry, starry night? Not really. What appears to be stars or galaxy clusters in this picture are actually black holes colored to identify specific energy levels. This is how the sky may look if you had x-ray vision. The National Aeronautics and Space Administration's (NASA) orbiting Chandra X-Ray Observatory took most of the black holes pictured here in the constellation Bootes. The inset image of the dark side of the moon is shown for size reference.

Black holes are dead stars that collapsed into themselves. They are hundreds of millions of times more massive than the sun and suck everything around them like a vacuum cleaner---even light.