Space Shot of the Day: Cathedral to Massive Stars

The Hubble Space Telescope took this spellbinding image of Pismis 24 (shown center above), one of the most massive and luminous star clusters known, glimmering above the NGC 6357 nebula that is approximately 8150 light-years away. According to NASA's estimates, the brightest star of Pismis 24 cluster is over 200 times the mass of our Sun.

Space Shot of the Day is a feature series following the latest developments in planetary science, astrophotography, space exploration, future plans for colonization and all things related to outer space.