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News for Norther Colorado and the world

Friday, October 31, 2014

Posts Tagged ‘globular clusters’

Astronomy Picture of the Day

Astronomy Picture of the Day

  NGC 4755: A Jewel Box of Stars Credit & Copyright: Dieter Willasch (Astro-Cabinet) Explanation: The great variety of star colors in this open cluster underlies its name: The Jewel Box. One of the bright central stars is a red supergiant, in contrast to the many blue stars that surround it. The cluster, also known as Kappa Crucis contains just over 100 stars, and is about 10 million years old. Open clusters are younger, contain few stars, and contain a much higher ... Full Story

Earthsky Tonight — April 18, Spica, your guide star

Earthsky Tonight — April 18, Spica, your guide star to Omega Centauri

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Silvery-blue Spica, the only prominent star in the constellation Virgo, acts as your guide to the Omega Centauri globular star cluster. To the unaided eye, Omega Centauri looks like a fairly faint (and possibly fuzzy) star. Very few of the Milky Way galaxy’s 250 or so globular clusters are readily visible without optics. To find Spica, extend the curve of the Big Dipper handle, as illustrated on our April 4 EarthSky ... Full Story

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