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Earthsky Tonight—July 28, Moonlight wipes out Delta Aquarid meteor shower
Posted By Gary Wamsley On July 27, 2010 @ 10:43 pm In Earth & Sky | Comments Disabled
Courtesy of EarthSky
A Clear Voice for Science
 The annual Delta Aquarid meteor shower is expected to peak before dawn on Thursday, July 29. Not that it really matters in 2010. The almost-full waning gibbous moon  will wipe out this year’s Delta Aquarid display. You would be much better off to wait for the Perseid shower, which should be at its best on the moon-free nights of August 12 and August 13.
Even in a favorable year, the Delta Aquarids are a modest shower, offering perhaps 15 to 20 meteors per hour. If you trace the paths of these Delta Aquarid meteors backward, they all appear to originate from a certain spot in the sky. This point is called the meteor shower radiant. It nearly aligns with the star Delta Aquarii (Skat) in the constellation Aquarius – hence, the meteor shower’s name.
Unfortunately, the bright moon will be shining right in front of Aquarius, not only wiping out meteors but probably the rather dim star Delta Aquarii to boot. The sky chart shows tomorrow’s predawn sky as seen from mid-temperate North American latitudes.
You will not see many – if any – meteors. However, given clear skies, you will certainly see the moon and the blazing planet Jupiter, and likely the bright star Fomalhaut , too!
Written by Bruce McClure 
StarDate Online 
Sky and Telescope 
National Geographic 
Space Com 
Amazing Space 
Scope City 
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URLs in this post:
 www.EarthSky.org: http://www.EarthSky.org
 Image: http://www.berthoudrecorder.com/2010/07/27/earthsky-tonight%e2%80%94july-28-moonlight-wipes-out-delta-aquarid-meteor-shower/phasej28/
 Image: http://www.berthoudrecorder.com/2010/07/27/earthsky-tonight%e2%80%94july-28-moonlight-wipes-out-delta-aquarid-meteor-shower/10july28_430/
 waning gibbous moon: http://earthsky.org/tonightpost/moon-phases/waning-gibbous
 EarthSky’s meteor shower guide for 2010: http://earthsky.org/astronomy-essentials/earthskys-meteor-shower-guide
 Fomalhaut: http://earthsky.org/tonightpost/brightest-stars/solitary-fomalhaut-guards-the-southern-sky
 Bruce McClure: http://earthsky.org/author/brucemcclure/
 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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