Robert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.’s Open University. Follow him on Twitter @sciencef1rst.
The constellation of Orion is made up of several striking features including the Sword of Orion which descends from Orion's three-starred belt. Both Orion's Sword and Orion's belt are
, loose unofficial patterns of stars that like constellations seem to take the shape of familiar or mythical objects., also known as the Three Kings or the Three Sisters, are the central star Alnilam, a bright supergiant, and Alnitak and Mintaka — both of which are actually star systems composed of three and five stars, respectively.
Within Orion's Sword are the stars 42 Orionis and Theta Orionis, the multiple star system Iota Orionis and the bright nebula Messier 42, also known as the Orion Nebula or NGC 1976. With binoculars, this nebula appears as a fuzzy grayish blob. But the observing power of a even a medium-sized telescope is sufficient to resolve the veils of gas and darker lanes of dust that make up Messier 42. This material forms the building blocks for the newThe Orion nebula can be found in the center of the hunter's sword, found just below his belt.
At the heart of Messier 42 and located around 1,600 light-years from Earth is the Trapezium Cluster or Theta-1 Orionis, a large open cluster of young stars that can be resolved with 5-inch telescopes and larger. The young stars in the Trapezium blast out X-rays and cause the surrounding
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