NGC2539
NGC 2539 is an open star cluster located about 4,400 light-years away in the constellation Puppis. At 370 million years old, it is a relative youngster. This false-color ultraviolet image, which reveals some of the youngest and hottest members in the cluster, is a composite from Swift's ultraviolet filters (uvw1, uvm2 and uvw2).
Image: Penn StateBlair Porterfield
Blair Porterfield, a Penn State astronomy major, studies the light emitted by star clusters. To see an example of an image made by Porterfield, click on the photo above.
Image: Kristen Devlin/Penn State










