I used to cut things out of newspapers, or write them down on a scratch piece of paper, and then "save" them between the pages of a book. Now I put them here.
Thursday, September 13, 2007
black hole at the center of the universe
The nucleus of the Whirlpool Galaxy (M51). The Cross marks the location of the black hole at the center of the galaxy. The Cross is formed by two dust rings. Bright ionization cones can be seen extending perpindicular to the largest dust ring. - NASA photo from widipediea