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Planets Above The Clouds
Title Planets Above The Clouds
Explanation Clouds scatter the faint orange rays of the setting sun [ http://antwrp.gsfc.nasa.gov/apod/ap000115.html ] in the foreground of this breathtaking photograph from the summit [ http://www.ifa.hawaii.edu/mko/mko.html ] of Mauna Kea, Hawaii [ http://antwrp.gsfc.nasa.gov/apod/ap980725.html ]. Taken on April 7th, this skyscape features a dramatic lunar and planetary alignment [ http://antwrp.gsfc.nasa.gov/apod/ap000406.html ]. An overexposed crescent moon [ http://antwrp.gsfc.nasa.gov/apod/ap991108.html ] dominates the celestial scene, but the bright "star" just below and to its right is Saturn [ http://www.jpl.nasa.gov/cassini/Kids/stories/ ] while further below Saturn is a close pairing of brilliant Jupiter [ http://antwrp.gsfc.nasa.gov/apod/ap000429.html ] and a fainter, yellowish Mars [ http://marsnt3.jpl.nasa.gov/education/students.html ]. Red giant star Aldebaran [ http://www.bo.astro.it/copernic/alde-eng.html ] is almost directly above the moon near the top of the image and the bright blue stars of the Pleiades cluster [ http://www.aao.gov.au/images.html/captions/uks018.html ] are visible about midway up and to the right of the moon-Aldebaran line. The good news is that planetary alignments [ http://www.skypub.com/news/special/whypanic.html ] like this one do not portend [ http://tech-two.mit.edu/Shakespeare/Tragedy/macbeth/ macbeth.html ] disasters, are relatively common, and can clearly make inspirational viewing for casual stargazers and astronomers alike. The bad [ http://www.badastronomy.com/bad/misc/planets.html ] news is that the world is not going to end because of the highly publicized planetary alignment [ http://www.griffithobs.org/SkyAlignments.html ] occurring tomorrow, May 5th -- so you probably will have to go to work [ http://www.nasa.gov/newsinfo/alignment.html ]!
Mount Megantic Magnetic Stor …
Title Mount Megantic Magnetic Storm
Explanation Plasma from the Sun and debris from a comet both collided with planet Earth last Saturday morning triggering magnetic storms [ http://www.sec.noaa.gov/NOAAscales/ ] and a meteor shower in a dazzling atmospheric spectacle [ http://spacescience.com/headlines/y2000/ ast14aug_1.htm ]. The debris stream from comet Swift-Tuttle is anticipated [ http://antwrp.gsfc.nasa.gov/apod/ap000812.html ] yearly, and many skygazers [ http://www.imo.net/news/news.html ] already planned to watch the peak of the annual Perseids [ http://comets.amsmeteors.org/meteors/showers/ perseids.html ] meteor shower in the dark hours of August 11/12. But the simultaneous, widely reported [ http://www.globaldialog.com/~jrummel/Aurora/ Aurora.html ] auroras were [ http://www.infowest.com/personal/s/schmutz/ aurora.HTML ] triggered by the chance arrival of something much less predictable -- a solar coronal mass ejection [ http://science.nasa.gov/ssl/pad/solar/ cmes.htm ]. This massive bubble of energetic plasma was seen leaving the active Sun's surface on August 9, just in time to travel to Earth and disrupt the planet's magnetic field [ http://www-spof.gsfc.nasa.gov/Education/ Intro.html ] triggering extensive auroras [ http://antwrp.gsfc.nasa.gov/cgi-bin/apod/ apod_ts?aurora ] during the meteor shower's peak! Inspired by the cosmic light show, Sebastien Gauthier photographed the [ http://www.geocities.com/CapeCanaveral/Station/3622/ AlbumPhotoAstronomie/AlbumAstronomie3.htm ] colorful auroral displays above the dramatic dome of the Mount-Megantic [ http://astrolab.interlinx.qc.ca/ ] Popular Observatory [ http://astrolab.interlinx.qc.ca/Obs_pop/ OPMM/ob_pop_choix.htm ] in southern Quebec, Canada. Bright Jupiter and giant star Aldebaran can be seen peering through [ http://antwrp.gsfc.nasa.gov/apod/ap000504.html ] the shimmering northern lights at the upper right.
September Sky
Title September Sky
Explanation Star clusters, planets, and a red giant posed for this portrait of the night [ http://antwrp.gsfc.nasa.gov/apod/ap000708.html ] sky from rural Jasper County, Iowa, USA. Astrophotographer [ http://geocities.com/stanzman_2001/ ] Stan Richard recorded the four minute time exposure looking east around midnight on September 3rd at Ashton-Wildwood Park. To avoid star trails [ http://pages.prodigy.net/pam.orman/JoeTrails.html ], his camera was mounted on a barndoor-style [ http://casa.colorado.edu/~rachford/widefield/ barndoor.html ] tracker to compensate for the Earth's rotation [ http://antwrp.gsfc.nasa.gov/apod/ap000715.html ]. Can you identify his celestial subjects? (Click on the image for a labeled version.) The Pleiades [ http://www.pantheon.org/mythica/articles/p/ pleiades.html ] and Hyades [ http://www.pantheon.org/mythica/articles/h/hyades.html ], the closest open or galactic star clusters [ http://www.seds.org/messier/open.html ] to the Sun, should be recognizable to beginning stargazers [ http://starchild.gsfc.nasa.gov/ ]. Of course gas giant Jupiter [ http://galileo.jpl.nasa.gov/jupiter/jupiter.html ] rules as the brightest object in the picture and the largest planet in the Solar System, but second largest planet Saturn [ http://www.jpl.nasa.gov/cassini/Kids/stories/ ] is also visible nearby. For sheer size cool red giant star Aldebaran [ http://www.astro.uiuc.edu/~kaler/sow/aldebaran.html ] is more impressive though, spanning about forty times the diameter of the Sun. Sixty light-years away and yellowish in this picture, Aldebaran is known as Alpha Tauri, the brightest star in Taurus [ http://aibn47.astro.uni-bonn.de/~gallery/constellations/ taurus/ ], the Bull.
Long Leonid
Title Long Leonid
Explanation Just last week this long lovely Leonid shower [ http://spacescience.com/headlines/y2000/ ast21nov_1.htm ] meteor arced through the night. Captured on [ http://www.comet-track.com/meteor/leonids00/ leonids00.html ] November 17/18 by photographer [ http://www.comet-track.com ] Bob Yen, the meteor trail spans about 70 times the apparent diameter of the full moon in the skies above Mt. Wilson, California, USA. The Leonid's path flashes from the outskirts of constellation Gemini [ http://www.seds.org/Maps/Stars_en/Fig/ gemini.html ] to the triangle-shaped head of Taurus [ http://www.astro.uiuc.edu/~kaler/sow/ taurus-p.html ] (lower right). Of course, the trail points back toward Leo, the shower's [ http://comets.amsmeteors.org/meteors/showers/ leonids.html ] eponymous radiant, while passing near such night sky notables as galactic star cluster M35 [ http://www.seds.org/messier/m/m035.html ] (upper left) and Taurus's brightest star, red giant Aldebaran [ http://www.astro.uiuc.edu/~kaler/sow/ aldebaran.html ]. Though the sky was ruled by a bright but waning Moon and brilliant Jupiter, the Leonid meteor shower [ http://www.spaceweather.com/meteors/gallery_18nov00.html ] still awed observers at dark sky locations with peak rates of hundreds of meteors per hour.
Planets in the West
Title Planets in the West
Explanation Have you seen any bright planets lately? Chances are if you've been outside under clear skies [ http://currentsky.com/ ] just after sunset, then you have. Now shining in the west as bright "stars [ http://nfo.edu/astro/planets.htm ]" in the night sky, are all five planets of the solar system known to [ http://www.nasm.si.edu/ceps/etp/discovery/ etpdiscovery.html ] ancient astronomers - Mercury, Venus, Mars [ http://mars.jpl.nasa.gov/ funzone.html ], Saturn, and Jupiter [ http://www.seds.org/nineplanets/nineplanets/ jupiter.html ]. Recorded from Holt, Michigan, USA about 40 minutes after sunset on April 14th, this digital image [ http://www.pa.msu.edu/people/frenchj/const/index2.html ] captures three of them, Venus, Mars, and Saturn [ http://www.jpl.nasa.gov/solar_system/planets/ saturn_index.html ], along with a young crescent Moon [ http://antwrp.gsfc.nasa.gov/apod/ap000728.html ]. Also indicated are the Pleiades [ http://antwrp.gsfc.nasa.gov/apod/ap010506.html ] star cluster and bright red giant star Aldebaran [ http://www.earthsky.com/Features/ Skywatching/pronounce.html ] in Taurus. Mercury [ http://www.psrd.hawaii.edu/Jan97/ MercuryUnveiled.html ], setting, is lost in the trees and glow along the horizon, while Jupiter is off the top of this view. The coming weeks [ http://www.darkhorizons.org/planets.htm ] will see photo opportunities galore as all five planets gradually move closer together, posing after sunset with the Moon and stars in the western sky [ http://www.skyviewcafe.com/skyview.shtml ]. Venus [ http://antwrp.gsfc.nasa.gov/apod/ap020330.html ], Mars, and Saturn will form the closest trio, drawing within a 5 degree circle (about the apparent size of your fist with arm extended) above Aldebaran by May 3rd.
Moon and Planets Sky Credit …
Title Moon and Planets Sky Credit & Copyright: Wojtek Rychlik [ http://www.pikespeakphoto.com ]
Explanation Look up into the sky tonight [ http://science.nasa.gov/headlines/y2004/ 19mar_planets.htm ] and without a telescope or binoculars you might have a view [ http://astronomy.swin.edu.au/staff/gmackie/billions.html ] like this one of Moon, planets and stars. The lovely photo [ http://www.pikespeakphoto.com/planets.html ] was taken on March 23rd, and captures the crescent Moon on the horizon with Venus above it. Both brilliant celestial bodies are over-exposed. Farther above Venus is the tinted glow of Mars with the Pleiades star cluster just to the red planet's right. The V-shaped arrangement of stars [ http://antwrp.gsfc.nasa.gov/apod/ap040304.html ] to the left of Mars is the Hydaes star cluster. Bright red giant Aldebaran [ http://www.astro.uiuc.edu/~kaler/sow/ aldebaran.html ], not itself a member of the Hyades cluster, marks the top left of the V. During the next week [ http://www.griffithobs.org/planetsgather.html ], all five naked-eye planets, Mercury, Venus, Mars, Jupiter, and Saturn, along with the Moon will grace the evening sky [ http://skyandtelescope.com/observing/objects/planets/ article_1226_1.asp ] together - a lunar and planetary spectacle that can be enjoyed by skygazers [ http://www.spaceweather.com/ ] around the world. But look just after sunset, low on the western horizon, to see Mercury [ http://antwrp.gsfc.nasa.gov/apod/ap030412.html ] before it sets. The next similar gathering [ http://antwrp.gsfc.nasa.gov/apod/ap000524.html ] of the planets will be in 2008.
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