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$17.30, May 4 2:30 am $0.01, May 4 - May 26 $17.27, May 6 3:03 pm $0.01, May 4 - May 26 $17.23, May 7 - May 8 $0.01, May 4 - May 26 $17.21, May 9 - May 11 $0.01, May 4 - May 26 $17.19, May 11 - May 12 $0.01, May 4 - May 26 $17.13, May 13 - May 14 $0.01, May 4 - May 26 $17.06, May 17 4:19 pm $0.01, May 4 - May 26 $17.02, May 19 - May 20 $0.01, May 4 - May 26 $16.90, May 20 - May 26 $0.01, May 4 - May 26 $16.82, May 28 9:58 am $0.18, May 28 9:58 am $16.78, May 30 10:06 am $0.44, May 30 10:06 am $16.68, May 31 - Jun 1 $1.27, Jun 1 3:13 am $16.60, Jun 2 - Jun 4 $1.35, Jun 3 - Jun 10 $15.95, Jun 5 10:48 am $1.35, Jun 3 - Jun 10 $15.91, Jun 8 - Jun 9 $1.35, Jun 3 - Jun 10 $15.87, Jun 10 - Jun 12 $1.35, Jun 3 - Jun 10 $15.87, Jun 10 - Jun 12 $0.97, Jun 12 6:23 am $15.83, Jun 13 - Jun 14 $0.96, Jun 13 - Jun 14 $15.79, Jun 16 - Jun 18 $1.00, Jun 15 - Jun 18 $15.81, Jun 19 - Jun 25 $1.09, Jun 19 - Jun 22 $15.81, Jun 19 - Jun 25 $1.11, Jun 24 - Jun 25 $15.74, Jun 26 6:00 pm $1.12, Jun 25 - Jun 29 $15.70, Jun 28 8:12 am $1.12, Jun 25 - Jun 29 $15.46, Jun 30 4:37 pm $1.13, Jun 30 - Jul 23 $15.29, Jul 1 - Jul 3 $1.13, Jun 30 - Jul 23 $15.27, Jul 4 5:46 am $1.13, Jun 30 - Jul 23 $15.23, Jul 5 9:19 am $1.13, Jun 30 - Jul 23 $15.13, Jul 7 10:34 pm $1.13, Jun 30 - Jul 23 $14.98, Jul 9 3:37 am $1.13, Jun 30 - Jul 23 $14.90, Jul 11 2:38 pm $1.13, Jun 30 - Jul 23 $14.88, Jul 12 7:56 pm $1.13, Jun 30 - Jul 23 $14.85, Jul 14 5:54 am $1.13, Jun 30 - Jul 23 $14.70, Jul 16 11:45 pm $1.13, Jun 30 - Jul 23 $14.60, Jul 18 6:23 am $1.13, Jun 30 - Jul 23 $14.54, Jul 20 11:58 am $1.13, Jun 30 - Jul 23 $14.50, Jul 22 - Jul 23 $1.13, Jun 30 - Jul 23 $14.46, Jul 24 - Jul 25 $1.12, Jul 24 2:49 pm $14.46, Jul 24 - Jul 25 $1.13, Jul 25 - Jul 27 $14.34, Jul 28 6:36 am $1.12, Jul 28 6:36 am $14.30, Jul 29 11:17 pm $1.13, Jul 29 - Aug 5 $14.18, Jul 31 - Aug 1 $1.13, Jul 29 - Aug 5 $14.14, Aug 2 2:35 pm $1.13, Jul 29 - Aug 5 $13.95, Aug 4 11:14 am $1.13, Jul 29 - Aug 5 $13.93, Aug 5 9:39 am $1.13, Jul 29 - Aug 5 $13.89, Aug 7 12:37 pm $1.06, Aug 6 - Aug 7 $13.82, Aug 9 1:03 pm $1.00, Aug 9 1:03 pm $13.74, Aug 11 1:34 pm $0.99, Aug 10 - Aug 16 $13.65, Aug 13 3:12 pm $0.99, Aug 10 - Aug 16 $13.63, Aug 14 - Aug 15 $0.99, Aug 10 - Aug 16 $13.58, Aug 16 - Aug 17 $0.99, Aug 10 - Aug 16 $13.50, Aug 18 2:01 pm $0.82, Aug 18 2:01 pm $13.48, Aug 19 - Aug 20 $0.52, Aug 20 9:20 pm $13.44, Aug 21 - Aug 22 $0.25, Aug 22 8:16 pm $13.42, Aug 23 10:24 pm $0.11, Aug 23 10:24 pm $13.24, Aug 26 - Aug 28 $0.01, Aug 24 - Sep 15 $13.18, Aug 30 11:36 am $0.01, Aug 24 - Sep 15 $13.10, Sep 1 4:24 pm $0.01, Aug 24 - Sep 15 $13.02, Sep 3 11:02 pm $0.01, Aug 24 - Sep 15 $12.91, Sep 6 7:07 am $0.01, Aug 24 - Sep 15 $12.83, Sep 8 1:01 pm $0.01, Aug 24 - Sep 15 $12.77, Sep 10 6:54 pm $0.01, Aug 24 - Sep 15 $12.75, Sep 13 3:06 am $0.01, Aug 24 - Sep 15 $12.72, Sep 15 3:04 am $0.01, Aug 24 - Sep 15 $12.65, Sep 19 4:22 am $0.13, Sep 19 4:22 am $12.61, Sep 22 2:41 am $0.23, Sep 22 2:41 am $12.58, Sep 23 10:07 pm $0.01, Sep 23 - Oct 9 $12.55, Sep 25 10:24 pm $0.01, Sep 23 - Oct 9 $12.49, Sep 27 11:45 pm $0.01, Sep 23 - Oct 9 $12.44, Sep 30 12:50 am $0.01, Sep 23 - Oct 9 $12.42, Oct 1 4:56 am $0.01, Sep 23 - Oct 9 $12.39, Oct 3 7:57 am $0.01, Sep 23 - Oct 9 $11.99, Oct 5 9:06 am $0.01, Sep 23 - Oct 9 $11.97, Oct 7 - Oct 9 $0.01, Sep 23 - Oct 9 $11.94, Oct 11 - Oct 13 $0.43, Oct 11 8:36 pm $11.94, Oct 11 - Oct 13 $0.44, Oct 13 11:13 pm $11.93, Oct 16 3:14 am $0.27, Oct 16 3:14 am $11.94, Oct 18 - Oct 22 $0.07, Oct 18 - Oct 20 $11.94, Oct 18 - Oct 22 $0.01, Oct 22 - Nov 26 $11.93, Oct 27 - Nov 8 $0.01, Oct 22 - Nov 26 $11.90, Nov 14 - Nov 26 $0.01, Oct 22 - Nov 26 $11.88, Nov 28 - Nov 30 $0.82, Nov 28 7:13 am $11.88, Nov 28 - Nov 30 $0.49, Nov 30 5:31 am $11.86, Dec 2 4:26 am $0.94, Dec 2 4:26 am $11.82, Dec 4 2:39 am $1.00, Dec 4 - Dec 6 $11.80, Dec 6 12:33 am $1.00, Dec 4 - Dec 6 $11.82, Dec 7 11:45 pm $1.48, Dec 7 - Dec 10 $11.80, Dec 10 12:36 am $1.48, Dec 7 - Dec 10 $11.78, Dec 12 1:19 am $0.01, Dec 12 - Dec 14 $11.74, Dec 14 12:57 am $0.01, Dec 12 - Dec 14 $11.73, Dec 16 1:10 am $1.00, Dec 16 - Dec 17 $11.69, Dec 17 11:57 pm $1.00, Dec 16 - Dec 17 $11.78, Dec 22 - Dec 26 $0.01, Dec 22 - Dec 28 $11.76, Dec 28 8:19 pm $0.01, Dec 22 - Dec 28 $11.77, Dec 30 6:12 am $1.00, Dec 30 - Jan 2 $11.72, Dec 31 - Jan 4 $1.00, Dec 30 - Jan 2 $11.70, Jan 5 2:30 am $1.49, Jan 5 2:30 am $11.70, Jan 6 8:48 pm $2.25, Jan 6 - Jan 7 $11.70, Jan 9 2:09 am $1.47, Jan 9 2:09 am $11.72, Jan 10 - Jan 16 $0.98, Jan 10 3:27 am $11.72, Jan 10 - Jan 16 $0.89, Jan 12 5:56 pm $11.72, Jan 10 - Jan 16 $0.79, Jan 14 7:30 am $11.72, Jan 10 - Jan 16 $0.67, Jan 16 1:20 am $11.70, Jan 17 7:16 pm $0.01, Jan 17 - Feb 1 $11.69, Jan 19 - Jan 24 $0.01, Jan 17 - Feb 1 $11.68, Jan 25 12:44 am $0.01, Jan 17 - Feb 1 $11.67, Jan 26 - Feb 1 $0.01, Jan 17 - Feb 1 $11.66, Feb 2 9:05 pm $1.49, Feb 2 9:05 pm $11.64, Feb 4 - Feb 5 $2.25, Feb 4 - Feb 19 $15.90, Feb 7 8:01 am $2.25, Feb 4 - Feb 19 $15.80, Feb 9 3:41 am $2.25, Feb 4 - Feb 19 $15.74, Feb 10 11:07 pm $2.25, Feb 4 - Feb 19 $15.63, Feb 12 6:43 pm $2.25, Feb 4 - Feb 19 $15.94, Feb 14 - Feb 15 $2.25, Feb 4 - Feb 19 $15.92, Feb 17 12:30 pm $2.25, Feb 4 - Feb 19 $15.86, Feb 19 9:23 am $2.25, Feb 4 - Feb 19 $15.78, Feb 21 7:19 am $1.80, Feb 21 7:19 am $15.70, Feb 23 5:50 am $0.90, Feb 23 5:50 am $15.47, Feb 25 3:12 am $1.44, Feb 25 3:12 am $15.09, Feb 27 1:26 am $1.35, Feb 27 - Feb 28 $14.67, Feb 28 11:59 pm $1.35, Feb 27 - Feb 28 $14.58, Mar 3 11:08 am $1.41, Mar 3 11:08 am $14.50, Mar 5 12:11 pm $2.19, Mar 5 12:11 pm $14.36, Mar 7 12:22 pm $2.25, Mar 7 - Mar 9 $14.22, Mar 9 12:17 pm $2.25, Mar 7 - Mar 9 $14.13, Mar 11 8:31 pm $2.24, Mar 11 8:31 pm $14.07, Mar 14 3:43 am $2.21, Mar 14 3:43 am $13.90, Mar 17 4:40 am $2.15, Mar 17 4:40 am $13.74, Mar 19 8:33 am $2.18, Mar 19 8:33 am $13.56, Mar 21 1:17 pm $1.69, Mar 21 1:17 pm $13.38, Mar 23 9:37 pm $0.89, Mar 23 9:37 pm $13.21, Mar 26 4:28 am $1.48, Mar 26 4:28 am $11.96, Mar 28 12:08 pm $1.43, Mar 28 12:08 pm $10.39, Mar 30 8:49 pm $1.34, Mar 30 8:49 pm $8.76, Apr 2 9:58 am $1.24, Apr 2 9:58 am $7.31, Apr 5 12:22 am $1.00, Apr 5 12:22 am $8.73, Apr 7 3:43 pm $0.90, Apr 7 3:43 pm $8.00, Apr 10 8:01 am $0.73, Apr 10 8:01 am $7.62, Apr 11 7:23 pm $0.68, Apr 11 7:23 pm $6.98, Apr 14 11:06 am $0.60, Apr 14 11:06 am $6.33, Apr 17 2:56 am $0.52, Apr 17 2:56 am $5.81, Apr 19 6:00 pm $0.39, Apr 19 6:00 pm $5.40, Apr 22 10:22 am $0.28, Apr 22 10:22 am $5.36, Apr 25 7:42 am $0.18, Apr 25 7:42 am $5.26, Apr 28 8:03 am $0.32, Apr 28 8:03 am $5.16, May 1 2:33 am $0.26, May 1 - May 3 $5.07, May 3 6:53 pm $0.26, May 1 - May 3 $4.96, May 6 1:13 pm $0.16, May 6 1:13 pm $4.83, May 10 3:46 pm $0.01, May 10 3:46 pm $4.71, May 13 10:25 pm $0.25, May 13 - May 17 $4.57, May 17 3:53 pm $0.25, May 13 - May 17 $4.42, May 22 1:38 am $0.70, May 22 - May 30 $4.31, May 26 4:18 am $0.70, May 22 - May 30 $4.19, May 30 5:46 pm $0.70, May 22 - May 30 $4.08, Jun 4 8:27 am $0.63, Jun 4 8:27 am $3.98, Jun 8 5:47 pm $0.57, Jun 8 5:47 pm $3.91, Jun 12 2:59 pm $0.42, Jun 12 2:59 pm $3.83, Jun 16 9:57 am $0.31, Jun 16 9:57 am $3.76, Jun 20 4:28 am $0.42, Jun 20 4:28 am $3.70, Jun 23 11:12 pm $0.58, Jun 23 11:12 pm $3.90, Jun 27 - Jul 8 $0.72, Jun 27 9:30 pm $3.90, Jun 27 - Jul 8 $0.56, Jun 29 10:56 pm $3.90, Jun 27 - Jul 8 $0.45, Jul 4 4:17 am $3.90, Jun 27 - Jul 8 $0.23, Jul 8 2:37 pm $12.56, Jul 13 - Jul 17 $0.01, Jul 13 - Jul 22 $12.51, Jul 21 - Jul 26 $0.01, Jul 13 - Jul 22 $12.51, Jul 21 - Jul 26 $0.06, Jul 26 11:35 am $12.56, Jul 30 1:39 am $0.01, Jul 30 - Aug 8 $12.51, Aug 2 - Aug 6 $0.01, Jul 30 - Aug 8 $12.56, Aug 8 - Oct 11 $0.01, Jul 30 - Aug 8 $12.56, Aug 8 - Oct 11 $0.25, Aug 12 - Aug 15 $12.56, Aug 8 - Oct 11 $0.22, Aug 19 12:42 pm $12.56, Aug 8 - Oct 11 $0.23, Aug 23 6:47 am $12.56, Aug 8 - Oct 11 $0.13, Aug 27 1:52 am $12.56, Aug 8 - Oct 11 $0.73, Aug 30 - Sep 3 $12.56, Aug 8 - Oct 11 $0.72, Sep 7 - Sep 11 $12.56, Aug 8 - Oct 11 $0.71, Sep 15 7:14 am $12.56, Aug 8 - Oct 11 $0.68, Sep 19 3:53 am $12.56, Aug 8 - Oct 11 $0.67, Sep 23 2:03 am $12.56, Aug 8 - Oct 11 $0.87, Sep 27 12:07 am $12.56, Aug 8 - Oct 11 $0.94, Sep 30 11:38 pm $12.56, Aug 8 - Oct 11 $0.84, Oct 5 1:33 am $12.56, Aug 8 - Oct 11 $0.78, Oct 7 3:46 am $12.56, Aug 8 - Oct 11 $0.73, Oct 11 - Oct 15 $11.99, Oct 15 - Nov 12 $0.73, Oct 11 - Oct 15 $11.99, Oct 15 - Nov 12 $0.68, Oct 19 1:52 am $11.99, Oct 15 - Nov 12 $0.70, Oct 22 - Oct 26 $11.99, Oct 15 - Nov 12 $0.87, Oct 30 7:39 pm $11.99, Oct 15 - Nov 12 $0.95, Nov 3 - Nov 7 $11.99, Oct 15 - Nov 12 $0.66, Nov 12 1:01 am $11.98, Nov 16 6:28 am $0.95, Nov 16 - Nov 20 $11.97, Nov 20 - Nov 25 $0.95, Nov 16 - Nov 20 $11.97, Nov 20 - Nov 25 $0.54, Nov 25 1:28 am $11.99, Nov 29 - Dec 7 $0.26, Nov 29 5:51 pm $11.99, Nov 29 - Dec 7 $0.12, Dec 2 5:25 am $11.99, Nov 29 - Dec 7 $1.00, Dec 7 2:37 am $22.77, Dec 12 3:40 am $0.20, Dec 12 3:40 am $22.68, Dec 17 5:08 am $0.01, Dec 17 5:08 am $22.61, Dec 22 3:01 am $0.95, Dec 22 3:01 am $22.55, Dec 27 3:01 pm $1.00, Dec 27 - Jan 25 $22.48, Jan 1 7:08 am $1.00, Dec 27 - Jan 25 $22.42, Jan 6 2:27 am $1.00, Dec 27 - Jan 25 $22.77, Jan 10 11:16 pm $1.00, Dec 27 - Jan 25 $22.79, Jan 15 - Jan 20 $1.00, Dec 27 - Jan 25 $22.74, Jan 25 - Feb 5 $1.00, Dec 27 - Jan 25 $22.74, Jan 25 - Feb 5 $1.17, Jan 30 - Feb 5 $19.79, Feb 10 - Mar 31 $1.16, Feb 10 3:20 am $19.79, Feb 10 - Mar 31 $0.93, Feb 15 11:48 am $19.79, Feb 10 - Mar 31 $0.55, Feb 20 8:34 pm $19.79, Feb 10 - Mar 31 $0.06, Feb 26 7:34 am $19.79, Feb 10 - Mar 31 $0.01, Mar 8 - Mar 31
62,409 1,467,626
1,171,875
781,250
390,625
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Price Details
3rd Party New
Last Seen
$19.79 Mar 31, '16
Highest
$22.79 Jan 15, '16
Lowest
$3.70 Jun 23, '15
Average
$19.79 (30d avg) $21.08 (90d avg) $17.75 (180d avg) $12.99 (365d avg) $13.27 (Lifetime average)
Added
May 4, 2014
3rd Party Used
Last Seen
$0.01 Mar 31, '16
Highest
$2.25 Mar 7, '15
Lowest
$0.01 Mar 8, '16
Average
$0.01 (30d avg) $0.63 (90d avg) $0.66 (180d avg) $0.55 (365d avg) $0.64 (Lifetime average)
Added
May 4, 2014
Sales Rank
30 day average: 1,417,701 90 day average: 1,110,723
Product Description
The universe beyond our own has been an object of scientific inquiry and a preoccupation of avid stargazers from antiquity up to the present day, and this preoccupation has evolved into a complex field in which mysteries are unlocked and discoveries are made on a constant basis. The covers the full width and breadth of the discipline and includes the latest and most important advances.
In more than 3,000 alphabetically organized articles accompanied by 500 stunning color and black and white photographs, star maps, and diagrams, The covers everything both the researcher and general enthusiast wants to knowfrom adaptive optics and cold dark matter to Islamic astronomy and the principle of equivalence. It includes a host of major articles on the cornerstones of astronomical investigation, such as the Milky Way, the sun and planets, optical and radio telescopes, stars, black holes, astrophysics, observatories, astronomical photography, space programs, the constellations and famous astronomers. Also featured are tables which display relevant data such as the brightest stars in the major constellations, annual meteor showers, major variable stars, dwarf stars, and energy production processes in the sun.
More than 100 astronomers from leading universities and observatories, each an expert in a specialized area of the field, wrote and reviewed the entries to ensure their authority. Patrick Moore, distinguished astronomer and longtime host of the popular BBC television program The Sky at Night, serves as the general editor for this most up-to-date and reliable reference work.
A glimpse into humanity's last great frontier, the is both accessible and comprehensive enough for both the serious stargazer and the professional astronomer.
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