The pictured core of the galaxy NGC 253 shows an exceptionally high rate of star formation. In the center are some of the densest knots of stars ever found, surrounded by glowing gas and dust lanes. Galaxies where such high star formation rates are seen are called "starburst" galaxies. The unusual color is a combination of the light emitted from the young, hot, blue stars and their associated emission and reflection nebulae.
On October 1, 1958, NASA was officially established, succeeding the National Advisory Committee for Aeronautics (NACA).
December 23, 2004
3C58: Pulsar Power