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Earthsky Tonight—June 20: Waxing gibbous moon closer to Spica
Posted By Gary Wamsley On June 19, 2010 @ 9:00 pm In Earth & Sky | Comments Disabled
Courtesy of EarthSky
A Clear Voice for Science
 Did you happen to see yesterday’s chart ? If so – or if you looked in the actual sky during the evening hours – you might have noticed that last night’s moon was between the planet Saturn and the star Spica. This evening, the moon shines by the star Spica in the constellation Virgo.
The moon was to the east of Spica last night. Tonight, if you look, you will find the moon much closer to Spica, the brightest star in the constellation Virgo the Maiden. If you are interested in knowing why, look back at yesterday’s  program.
You do not have to wait until after sunset to see tonight’s moon. You can see the moon in the late afternoon today in a blue daytime sky. The moon, now in a waxing gibbous phase , will be visible in the southern sky just before sunset. It will appear as a pale ghost of a moon, possibly swimming among white puffy clouds.
Why can you see today’s moon during the day? Because the moon moves in orbit around Earth, it is in the daytime sky as often as the night sky. It is not unusual for the sun’s glare to hide the daytime moon from view. However, right now the moon is well away from the sun on the sky’s dome – note that it is in the south tonight, when the sun is going down in the west-northwest.
What’s more, the moon is showing us a large fraction of its lighted half now, and so it is easy to see the moon in daylight today. The moon will be full  on June 26.
Written by Deborah Byrd
CHANDRA Photo Album 
StarDate Online 
Sky and Telescope 
National Geographic 
Space Com 
Amazing Space 
Scope City 
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URL to article: http://www.berthoudrecorder.com/2010/06/19/earthsky-tonight%e2%80%94june-20-waxing-gibbous-moon-closer-to-spica/
URLs in this post:
 www.EarthSky.org: http://www.EarthSky.org
 Image: http://www.berthoudrecorder.com/2010/06/19/earthsky-tonight%e2%80%94june-20-waxing-gibbous-moon-closer-to-spica/phase-june-20/
 Image: http://www.berthoudrecorder.com/2010/06/19/earthsky-tonight%e2%80%94june-20-waxing-gibbous-moon-closer-to-spica/10jun20_430/
 yesterday’s chart: http://earthsky.org/es-tonight/waxing-moon-approaching-star-spica
 waxing gibbous phase: http://earthsky.org/tonightpost/moon-phases/waxing-gibbous
 full: http://earthsky.org/tonightpost/moon-phases/full-moon
 June 21 solstice ushers in northernmost sunrises, sunsets: http://earthsky.org/es-tonight/solstice-brings-northernmost-sunset
 North and South America to see lunar eclipse before dawn on June 26: http://earthsky.org/es-tonight/americas-partial-lunar-eclipse-before-dawn-june-26
 Everything you need to know: June solstice 2010: http://www.berthoudrecorder.com/2010/06/18/earthsky-tonight-everything-you-need-to-know-june-solstice-2010
 Comet McNaught c/2009 R1 visible in early morning: http://news.nationalgeographic.com/news/2010/06/100615-biggest-comet-mcnaught-sky-show-science-space/
 Astronomy Picture of the Day from NASA/JPL: http://antwrp.gsfc.nasa.gov/apod/
 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
 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/
 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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