Astronomy
This map unfolds the entire night sky from sunset (at right) until sunrise (at left). Arrows and colored dots show motions and l ...
1° E AURIGA Capella Path of Comet PANSTARRS May 1 N 31 26 21 16 11 6 s k / ` l Comet PANSTARRS (C/2016 R2) May 8, 11:30 P.M. ED ...
Looking west May 17, 1 hour after sunset Venus Moon Betelgeuse Capella Procyon Pollux Castor ORION TAURUS AURIGA GEMINI 10° N E ...
44 ASTRONOMY • MAY 2018 A: You are absolutely right that not even light can escape from a black hole, and yet they launch huge, ...
1 10 100 1,000 10,000 100,000 Astronomical units (AU) JupiterSaturn EarthMars Main asteroid belt Kuiper Belt Inner Oort Cloud Oo ...
46 ASTRONOMY • MAY 2018 O ne of the most striking features of the distribution of matter in the universe is its filamentary appe ...
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150° 120° 90° 60° 30° 330° 300° 270° 240° 210° 60° 30° –30° 60° 48 ASTRONOMY • MAY 2018 filaments stretching half a billion li ...
15° 50° 45° 40° 35° 30° 25° 20° Declination 3h00m 2h00m 1h00m 0h00m 23h00m 22h00m Right ascension WWW.ASTRONOMY.COM 49 One astro ...
70° 60° 50° 40° 30° 20° 10° 0° 350° 340° –30° 40° 50° Density of matter 1 billion light-years 50 ASTRONOMY • MAY 2018 They not ...
WWW.ASTRONOMY.COM 51 directions as gravity shepherds material along filaments. This imprints a built-in memory of their environm ...
52 ASTRONOMY • MAY 2018 Leo’s exotic Beyond the brightest galaxies, the Lion contains many challenging deep-sky targets. by Step ...
WWW.ASTRONOMY.COM 53 deep-sky gems The Leo Triplet — M65 (top right), M66 (bottom right), and NGC 3628 — consists of three galax ...
54 ASTRONOMY • MAY 2018 M ost deep-sky hunters associate Leo with galaxies ... and so they should. Although the celestial Lion h ...
WWW.ASTRONOMY.COM 55 telescope. The galaxy was described as tri- angular shaped, and was held steady with averted vision. Galact ...
56 ASTRONOMY • MAY 2018 discover and share. Skilled deep-sky observers are renowned for seeing what used to be deemed impossible ...
WWW.ASTRONOMY.COM 57 make a 10 ̊ sweep east with a wide-field eyepiece. You are within striking range of another celebrated pack ...
August 2003 July 2018 March 2832 34,580,000 miles 35,785,000 miles 63,070,000 miles Earth Sun 58 ASTRONOMY • MAY 2018 It’s been ...
WWW.ASTRONOMY.COM 59 to Earth (and thus appears a smidge larger) on the 31st. The Red Planet will lie 35,785,000 miles (57,590,0 ...
–2.0 –2.2 –2.4 –2.6 –2.8 June 25 July 1 July 9 July 15 July 31 Aug. 10 Aug. 19 Aug. 28 Sep. 4 Date Magnitude 20" 21" 22" 23" 24" ...
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