March 21, 2018
Every birthday is a reminder that you are made of the same material as the stars overhead — carbon, nitrogen, oxygen, all cooked in stellar...
Camera Orion
Birthday · March 21, 2018
A little universe, just for you
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Ready to give.
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APOD published March 21, 2018. Credit: Derrick Lim. A publication-date match, not a photo taken on your date. Independent of NASA.
Do you recognize this constellation? Although it is one of the most recognizable star groupings on the sky, Orion's icons don't look quite as colorful to the eye as they do to a camera. In this 20-image digitally-composed mosaic, cool red giant Betelgeuse takes on a strong orange tint as the brightest star at the upper left. Orion's hot blue stars are numerous, with supergiant Rigel balancing Betelgeuse at the lower right, and Bellatrix at the upper right Lined up in Orion's belt are three stars all about 1,500 light-years away, born from the constellation's well-studied interstellar clouds. Below Orion's belt a reddish and fuzzy patch that might also look familiar -- the stellar nursery known as Orion's Nebula. Finally, just barely visible to the unaided eye but quite striking here by camera is Barnard's Loop -- a huge gaseous emission nebula surrounding Orion's Belt and Nebula discovered over 100 years ago by the pioneering Orion photographer E. E. Barnard. Follow APOD on: Facebook, Google Plus, Instagram, or Twitter
Image credit: Derrick Lim