This Week's Sky at a Glance
Some daily events in the changing sky for August 29 September 6.
Saturday, August 30
Sunday, August 31
Tuesday, September 2
Wednesday, September 3
Thursday, September 4
Saturday, Sept. 6
Want to become a better amateur astronomer? Learn your way around the constellations. They're the key to locating everything fainter and deeper to hunt with binoculars or a telescope. For an easy-to-use constellation guide covering the whole evening sky, use the big monthly foldout map in each issue of Sky & Telescope, the essential magazine of astronomy. Or download our free Getting Started in Astronomy booklet (which only has bimonthly maps).
Once you get a telescope, to put it to good use you'll need a detailed, large-scale sky atlas (set of maps; the standards are Sky Atlas 2000.0 or the smaller Pocket Sky Atlas) and good deep-sky guidebooks (such as Sky Atlas 2000.0 Companion by Strong and Sinnott, the even more detailed Night Sky Observer's Guide by Kepple and Sanner, or the classic Burnham's Celestial Handbook). Read how to use them effectively.
More beginners' tips: "How to Start Right in Astronomy".
This Week's Planet Roundup
Mercury (about magnitude 0) is 3° lower left of much-brighter Venus low in the west-southwest in bright twilight, as shown at the top of this page. Bring binoculars.
Venus (magnitude 3.8) is still low in the glow of sunset. Look for it above the west-southwest horizon about 30 minutes after sundown. Fainter Mercury is just to its lower left, as shown at the top of this page. Look too for little Mars, moving in day by day from the left.
Mars (a dim magnitude +1.7!) is closing in on Venus and passes 1/3° south (lower left) of it on September 11th. See the illustration at the top of this page and use binoculars!
Saturn is hidden behind the glare of the Sun.
Uranus and Neptune (magnitudes 5.7 and 7.8, respectively, in Aquarius and Capricornus) are well up in the southeast during evening. Use our article and finder charts.
Pluto (magnitude 14.0, in the northwestern corner of Sagittarius) is in the south-southwest right after dark. If you've got a big scope and a dark sky, use our article and finder chart.
All descriptions that relate to your horizon or zenith including the words up, down, right, and left are written for the world's mid-northern latitudes. Descriptions that also depend on longitude (mainly Moon positions) are for North America. Eastern Daylight Time (EDT) equals Universal Time (known as UT, UTC, or GMT) minus 4 hours.
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