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Mars: A Halloween Treat in the Night Sky

Posted October 30, 2009 10:35 AM

From SPACE.com:

There's a special treat waiting for you this Halloween.

Remember how, in the Peanuts cartoon, Linus would wait every Halloween for the Great Pumpkin to appear in his pumpkin patch? Well, this Halloween there is a nice big orange pumpkin of sorts right in the middle of the Beehive star cluster in Cancer.

To receive this treat, all you have to do is stay up past midnight on Halloween and look for the planet Mars, now becoming quite bright at magnitude 0.4.

If you haven't looked at Mars lately, you'll be surprised at how bright it's grown. It now equals the bright star Betelgeuse in brightness, shines significantly brighter than nearby Castor, Pollux, and Regulus, and is exceeded only by Sirius (the brightest star in the sky), Capella, Rigel and Procyon.

Mars typically appears orange or ruddy compared to other planets and the stars. In a small telescope, it becomes a fuzzy orb rather than just a point of light.

Zeroing in on Mars with binoculars or a telescope will show that it is embedded in the beautiful open star cluster, number 44 in Messier's catalog, known as the Beehive. At 590 light-years distance, it is one of the closest star clusters to the sun. It's also unusual in that it shines brighter than any of the individual stars in the its constellation, Cancer.

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