February 24, 2017
The stars above are ancient, but your chance to be here is exquisitely temporary.
NGC 3621: Far Beyond the Local Group
Birthday · February 24, 2017
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APOD published February 24, 2017. Credit: Robert Gendler. A publication-date match, not a photo taken on your date. Independent of NASA.
Far beyond the local group of galaxies lies NGC 3621, some 22 million light-years away. Found in the multi-headed southern constellation Hydra, the winding spiral arms of this gorgeous island universe are loaded with luminous blue star clusters, pinkish starforming regions, and dark dust lanes. Still, for astronomers NGC 3621 has not been just another pretty face-on spiral galaxy. Some of its brighter stars have been used as standard candles to establish important estimates of extragalactic distances and the scale of the Universe. This beautiful image of NGC 3621, is a composite of space- and ground-based telescope data. It traces the loose spiral arms far from the galaxy's brighter central regions for some 100,000 light-years. Spiky foreground stars in our own Milky Way Galaxy and even more distant background galaxies are scattered across the colorful skyscape.
Image credit: Robert Gendler