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Sky Tonight—February 16, Bright moon puts Cancer in spotlight
Posted By Editor On February 16, 2011 @ 8:27 am In Earth & Sky | Comments Disabled
Courtesy of EarthSky
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 The almost-full waxing gibbous moon  puts the constellation Cancer in the spotlight – but out of view – this Wednesday night. Demure Cancer the Crab is the faintest constellation of the Zodiac. You can see it only on dark, moonless nights.
The starry sky is like a great big connect-the-dots book, enabling stargazers to star-hop from brighter stars to more obscure nighttime treasures. For instance, when the moon drops out of the evening sky in the last week of February, you can look for Cancer the Crab to show its delicate starlit figure in the region of sky in between the Leo star Regulus  and the Gemini stars Castor  and Pollux .
Our chart shows the eastern evening sky for North American mid-northern latitudes. However, the night sky looks similar at northern latitudes from all around the world. The differences are tiny. For example, tonight the moon’s place in front of Cancer will differ somewhat as seen from around the world. As seen from Europe and Asia, the moon shines closer to Gemini’s stars, Castor and Pollux, and farther away from Regulus, the brightest star in the constellation Leo the Lion. These little differences, as seen from around the world, are due to the moon’s own motion in orbit around Earth.
From the southern hemisphere, the differences are due in part to the moon’s movement, and in part to the difference in perspective from one hemisphere to the other. From the southern hemisphere tonight, Castor and Pollux appear to the left or upper left of the moon, whereas Regulus is found below the moon or to the moon’s lower right.
Still, we all live under the same sky, and no matter where you live worldwide, the moon beams in front of Cancer tonight, with Castor, Pollux, and Regulus nearby.
Just remember – although we outline Cancer for you on our chart, you are not likely to see this constellation in tonight’s drenching moonlight. Notice the stars around it, and come back in a week to find the faint Crab when the moon has moved on its way – and left the night sky dark for stargazing.
Written by Bruce McClure 
EarthSky: Space 
CHANDRA Photo Album 
Universe Today 
StarDate Online 
Sky and Telescope 
National Geographic 
Space Com 
Simostronomy Blog 
Amazing Space 
Scope City 
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URL to article: http://www.berthoudrecorder.com/2011/02/16/sky-tonight%e2%80%94february-16-bright-moon-puts-cancer-in-spotlight/
URLs in this post:
 www.EarthSky.org: http://www.EarthSky.org
 Image: http://www.berthoudrecorder.com/wp-content/uploads/2011/02/phase16.gif
 Image: http://www.berthoudrecorder.com/wp-content/uploads/2011/02/feb16.jpg
 waxing gibbous moon: http://earthsky.org/moon-phases/waxing-gibbous
 Understanding moon phases: http://earthsky.org/moon-phases/understandingmoonphases
 Regulus: http://www.earthsky.org/tonightpost/brightest-stars/best-regulus-the-heart-of-the-lion
 Castor: http://www.earthsky.org/tonightpost/brightest-stars/best-castor-brightest-second-magnitude-star
 Pollux: http://www.earthsky.org/tonightpost/brightest-stars/pollux-not-castor-is-geminis-brightest-star
 Jupiter is the brilliant object in the west after sunset: http://earthsky.org/astronomy-essentials/bright-object-planet-jupiter-2011-planets-2011-planets-tonight
 Venus is the dazzling object in southeast before sunrise: http://earthsky.org/astronomy-essentials/bright-object-planet-venus-2011-planets-2011-planets-tonight
 Beehive cluster: 1,000 stars in Cancer: http://earthsky.org/clusters-nebulae-galaxies/praesepe-beehive-cluster
 Image: http://www.berthoudrecorder.com/wp-content/uploads/2011/02/brucemcclure.thumbnail1.jpg
 Bruce McClure: http://earthsky.org/author/brucemcclure/
 Astronomy Picture of the Day from NASA/JPL: http://antwrp.gsfc.nasa.gov/apod/
 EarthSky: Space: http://earthsky.org/space
 CHANDRA Photo Album: http://chandra.harvard.edu/photo/
 U.S. Naval Observator Astronomical Information cente: http://www.usno.navy.mil/USNO/astronomical-applications/astronomical-information-center/astronomical-information-center
 Universe Today: http://www.universetoday.com/
 StarDate Online: http://stardate.org/
 Sky and Telescope: http://www.skyandtelescope.com/observing/ataglance/
 National Geographic: http://news.nationalgeographic.com/news/
 Space Com: http://www.space.com/nightsky/
 Simostronomy Blog: http://simostronomy.blogspot.com/
 Amazing Space: http://amazing-space.stsci.edu/tonights_sky/
 The York County Astronomical Society: http://www.ycas.org/tonights_sky.htm
 Scope City: http://www.scopecity.net/
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