Orion Revisited: Astronomers Find New Star Cluster in Front of the Orion Nebula
The well-known star-forming region of the Orion Nebula. Credit: Canada-France-Hawaii Telescope / Coelum (J.-C. Cuillandre & G. Anselmi)Precise distances are difficult to gauge in space, especially within the relatively local regions of the Galaxy. Stars which appear close together in the night sky may actually be separated by many hundreds or thousands of light-years, and since there’s only a limited amount of space here on Earth with which to determine distances using parallax, astronomers have to come up with other ways to figure out how far objects are, and what exactly is in front of or “behind” what.
Recently, astronomers using the 340-megapixel MegaCam on the Canada-France-Hawaii Telescope (CFHT) observed the star-forming region of the famous Orion nebula — located only 1,500 light-years away — and determined that two massive groupings of stars are actually in front of the nebula cluster, separate structures located between it and Earth that may ultimately force astronomers to rethink how the benchmark stars there had formed.
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© Jason Major for Universe Today, 2012. | Permalink | No comment |
Post tags: CFHT, clusters, distance, L1641N, nebula, NGC 1980, Orion, space, star formation, stars
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