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News for Norther Colorado and the world

Tuesday, July 29, 2014

Posts Tagged ‘Cepheid variable stars’

Astronomy Picture of the Day

Astronomy Picture of the Day

NGC 5584: Expanding the Universe Credit: NASA, ESA, A. Riess (STScI/JHU), L. Macri (Texas A & M Univ.) et al., Hubble Heritage (STScI/AURA) Explanation: Big, beautiful NGC 5548 is more that 50,000 light-years across and lies 72 million light-years away toward the constellation Virgo. The winding spiral arms of this gorgeous island universe are loaded with luminous young star clusters and dark dust lanes. Still, for earthbound astronomers NGC 5548 is not just another pretty ... Full Story

EarthSky Tonight—Nov 6, A famous variable star in

EarthSky Tonight—Nov 6, A famous variable star in the constellation Cepheus

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Delta Cephei is a famous variable star in the constellation Cepheus. With clock-like precision, this rather faint star doubles in brightness every 5.36 days. You can see the brightness change best if you contrast this star to others nearby. The constellation Cepheus requires a dark sky to be seen, but if you can spot this constellation, you might be able to find the variable star. You will find it high in your northern ... Full Story

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