... Was this image taken with a telescope or a microscope? ... A Massive Star in NGC 6357 . ... For reasons unknown, NGC 6357 is forming some of the most massive stars ever discovered. ... The first identified compact galaxy group, Stephan's Quintet is featured in this eye-catching image constructed with data drawn from the extensive Hubble Legacy Archive. About 300 million light-years away, only four galaxies of the group are actually locked in a cosmic dance of repeated close encounters. ...