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Sky Tonight—May 13, Moon near golden Saturn
Posted By Editor On May 12, 2011 @ 10:52 pm In Earth & Sky | Comments Disabled
Courtesy of EarthSky
A Clear Voice for Science
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 You’ll find the moon in a waxing gibbous  phase this evening – more than half lighted but less than full – in the sky from sunset until after midnight.
Tonight’s moon will be visible near a bright object in our sky. It is not a star, but a planet – Saturn, planet of the rings. Given clear skies, almost everyone around the world can see the moon and Saturn near each other this evening.
Earth passed between Saturn and the sun on April 3 of this year. That was Saturn’s yearly opposition, and it means that we are farther from Saturn now than we were six weeks ago. We are now racing ahead of Saturn in Earth’s smaller, faster orbit around the sun. So, Saturn is steadily appearing dimmer on our sky’s dome, and it is in our sky for fewer hours of each night.
There is a bright star near the moon and Saturn, too, tonight. It is Spica ; the brightest light in the constellation Virgo the Maiden. Spica is the 15th brightest star in all the heavens.
Saturn, like all planets, will be shining with a steadier light than the twinkling stars, and it will be the closer bright light to the moon tonight.
In contrast to the moon, Saturn moves at a snail’s pace across the dome of night. By tomorrow night, the moon will have moved on, pursuing its endless orbit around Earth.
By Deborah Byrd 
EarthSky: Space 
Universe Today 
StarDate Online 
Sky and Telescope 
National Geographic 
Space Com 
Simostronomy Blog 
Amazing Space 
Scope City 
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URLs in this post:
 www.EarthSky.org: http://www.EarthSky.org
 Image: http://www.berthoudrecorder.com/wp-content/uploads/2011/04/phases-r-09.jpg
 Image: http://www.berthoudrecorder.com/wp-content/uploads/2011/05/may13.jpg
 waxing gibbous: http://earthsky.org/tonightpost/moon-phases/waxing-gibbous
 Spica: http://earthsky.org/tonightpost/brightest-stars/speed-on-to-spica-the-15th-brightest-star
 Deborah Byrd: http://earthsky.org/team/deborahbyrd
 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/
 James S McDonnell Planetarium: http://www.slsc.org/WhatToDo/Planetarium/NightSkyUpdate.aspx
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