Image: Ngc6397 hst blue straggler

Description: Image of NGC 6397 taken by the Hubble Space Telescope, with evidence of a number of blue stragglers. APOD 2002 February 20
Title: Ngc6397 hst blue straggler
Credit: http://antwrp.gsfc.nasa.gov/apod/ap020220.html and http://www.esa.int/esa-mmg/mmg.pl?b=b&keyword=6397&single=y&start=2&size=b
Author: Francesco Ferraro (Bologna Observatory), ESA, NASA
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