Some daily events in the changing sky for November 9 17.
Comet Holmes is still an easy naked-eye sight. The comet continues enlarging daily without losing any of its brightness. It's easy to find in Perseus in the evening sky a fuzzball among the pinpoint stars. Don't wait; moonlight starts returning to the evening sky around November 15th. See our finder charts, full story, and reader photos.
Friday, November 9
Saturday, November 10
Sunday, November 11
Monday, November 12
Tuesday, November 13
Wednesday, November 14
Thursday, November 15
Friday, November 16
Saturday, November 17
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 standard is Sky Atlas 2000.0) 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 enchanting though increasingly dated 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 0.6) is having its best morning showing of the year. Look for it about 50 or 60 minutes before sunrise low in the east-southeast, very far lower left of bright Venus. Don't confuse it with fainter Spica, which is getting farther to Mercury's upper right.
To find your local sunrise time (and much else), make sure you've put your location into our online almanac. Be sure the Daylight Saving Time box is unchecked.
Venus (magnitude 4.4, in Virgo) blazes in the east-southeast before and during dawn. It forms a nearly equilateral triangle this week with Arcturus far to its left and Mercury far below them.
Mars (magnitude 0.7, in Gemini) now rises as early as 8 or 8:30 p.m. It shines very high toward the south in early morning passing near the zenith, in fact, for mid-northern observers.
In a telescope Mars now appears 13 arcseconds in diameter, nearly as wide as the 15.9" it will display around its Christmas-season opposition. The Martian dust storms of July and August have ended, but the planet's atmosphere still contains some dust, making surface features fairly low-contrast. For all about observing Mars with a telescope this season, see the guide and surface-feature map in the November Sky & Telescope, page 66.
Jupiter (magnitude 1.9, in southern Ophiuchus) is sinking very low in the southwest in twilight. It sets soon after dark.
Saturn (magnitude +0.8) rises around midnight or 1 a.m. It's very high to the upper right of Venus before and during dawn. Fainter Regulus (magnitude +1.4) is upper right of Saturn.
Uranus (magnitude 5.8, in Aquarius) and Neptune (magnitude 7.9, in Capricornus) are well placed in the south early in the evening. Finder charts for them are in the July Sky & Telescope, page 60, and online. With a big scope you can shoot for their faint moons! See the October Sky & Telescope, page 69. Do it early in the week before moonlight interferes.
Pluto, near Jupiter, is lost in the sunset.
All descriptions that relate to your horizon or zenith including the words up, down, right, and left are written for the world's midnorthern latitudes. Descriptions that also depend on longitude (mainly Moon positions) are for North America. Eastern Standard Time (EDT) equals Universal Time (UT, UTC, or GMT) minus 5 hours.
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