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Examining objects and phenomena in space such as nebulae, galaxies and comets is Astronomy. Some people do it for a living, others just to pass the time. That’s why when a web site or magazine offers an astronomy picture of the day it’s likely to garner a great deal of attention. There are so many things to see, that browsing such images will never become boring.
NASA of course is a primary source for an astronomy picture of the day. This site NASA.gov shows a new image each and every day. The multimedia section shows both images and videos. This could be an excellent source for images and videos for your own daily updated site. November 5, 2008 showed a close view of Saturn’s moon Enceladus. It was taken by the Cassini space craft as it passed about 1,700 kilometers from the surface. The image is so detailed that features about the size of a bus are viewable. The ice on this moon reflects nearly 100% of all the light that hits it. Talk about snow blind. The moon is so interesting that Cassini will continue to fly by for more images later in its mission.
NASA maintains an archive of all the astronomy photos of the day dating all the way back to June 16 of 1995. It was a representation of the earth as if it were as dense as a neutron star. Of course the image is a computer simulation. The most interesting feature is that the constellation Orion is visible twice. That’s because a neutron star is dense enough to bend light from behind it to the front of it. This causes some double vision.
NASA’s COBY satellite took a very interesting image of the center of the Milky Way galaxy on September 8, 1995. This area is normally invisible because of the dust obscuring it. But COBE’s infrared imaging captured this amazing image.
January 1 in 2000 and 2001 had the very same astronomy picture of the day. It’s due to the fact that many people think of the year 2000 as the first day of the third millennium. However the third millennium actually began on January 1, 2001. Instead of arguing NASA used both dates. The image found at apod.nasa.gov/apod/ap010101.html shows the progression of our picture of the universe from orbs that rotate around the Earth all the way to the big bang event creating an ever expanding cosmos.
There are countless days each with their own astronomy picture of the day. Go to NASA’s website for more.
I hope the information above was useful. Thanks for reading.
What would constitute useful history? That which should teach us our duties and our rights, without appearing to teach them. ~Voltaire, Philosophical Dictionary
Astronomy

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Astronomy
* Today on Crash Course Astronomy, Phil dives into some very dark matters. The stuff we can actually observe in the universe isn’t all there is. Galaxies and other large structures in the universe are created and shifted by a force we detect mostly indirectly, by observing its impact: DARK MATTER.
Crash Course Astronomy Poster: http://store.dftba.com/products/crashcourse-astronomy-poster
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Table of Contents
Normal and Dark Matter 0:55
Dark Matter Only Interacts With Normal Matter Through Gravity 4:27
Dark Matter Bends Light 5:08
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PHOTOS/VIDEOS
Virtual tour in our Solar System (Artist’s impression) http://www.spacetelescope.org/videos/hubblecast27b/ [credit: ESA/Hubble (M. Kornmesser & L. L. Christensen)]
Hubblecast 11: A grand design in a galactic festoon http://www.spacetelescope.org/videos/heic0719a/ [credit: ESA/Hubble (M. Kornmesser & L. L. Christensen)]
Hubble’s High-Definition Panoramic View of the Andromeda Galaxy http://hubblesite.org/newscenter/archive/releases/2015/02/image/a/ [credit: NASA, ESA, J. Dalcanton, B.F. Williams, and L.C. Johnson (University of Washington), the PHAT team, and R. Gendler]
Panning and zooming on Abell 1689 http://www.spacetelescope.org/videos/heic0805b/ [credit: ESA/Hubble (M. Kornmesser & L. L. Christensen)]
All-sky image of molecular gas and three molecular cloud complexes seen by Planck http://www.nasa.gov/mission_pages/planck/multimedia/pia15227.html#.ViZwA36rSUl [credit: ESA/Planck Collaboration]
How to Become a Star http://www.eso.org/public/images/eso0102a/ [credit: ESO]
Neutron star illustrated https://commons.wikimedia.org/wiki/File:Neutron_star_illustrated.jpg [credit: NASA, Casey Reed – Penn State University]
Alone in Space – Astronomers Find New Kind of Planet http://www.nasa.gov/topics/universe/features/pia14093.html [credit: NASA/JPL-Caltech]
Black hole deforms space http://www.spacetelescope.org/videos/hst15_blackhole_grid/ [credit: ESA/Hubble (M. Kornmesser & L. L. Christensen)]
Gravitational lensing in action http://www.spacetelescope.org/videos/heic1106a/ [credit: NASA, ESA & L. Calçada]
Bullet Cluster http://apod.nasa.gov/apod/image/0608/bulletcluster_comp_f2048.jpg [credit: X-ray: NASA/CXC/CfA/ M.Markevitch et al.; Lensing Map: NASA/STScI; ESO WFI; Magellan/U.Arizona/ D.Clowe et al. Optical: NASA/STScI; Magellan/U.Arizona/D.Clowe et al.]
Bullet Cluster, Optical http://chandra.harvard.edu/photo/2008/bullet/bullet_optical.jpg [credit: NASA/STScI; Magellan/U.Arizona/D.Clowe et al.]
Bullet Cluster, X-ray http://chandra.harvard.edu/photo/2008/bullet/bullet_xray.jpg [credit: NASA/CXC/CfA/ M.Markevitch et al.]
The Bullet Cluster http://www.esa.int/spaceinimages/Images/2007/07/The_Bullet_Cluster2 [credit: X-ray: NASA/CXC/CfA/M.Markevitch, Optical and lensing map: NASA/STScI, Magellan/U.Arizona/D.Clowe, Lensing map: ESO WFI]
Pandora’s Cluster — Clash of the Titans http://www.nasa.gov/mission_pages/hubble/science/pandora-cluster.html [credit: NASA]
Hubble Refines Distance to Pleiades Star Cluster http://hubblesite.org/newscenter/archive/releases/2004/20/image/a/ [credit: NASA, ESA and AURA/Caltech]
Stephan’s Quintet http://apod.nasa.gov/apod/ap120225.html [credit: Hubble Legacy Archive, ESA, NASA]
Virgo Cluster Galaxies http://apod.nasa.gov/apod/ap150804.html [credit: Rogelio Bernal Andreo]
Illustration of the distribution dark matter in the Universe http://www.nasa.gov/mission_pages/hubble/science/hst_img_20080520.html [credit: NASA, ESA, and E. Hallman (University of Colorado, Boulder)]
Dark Matter: Crash Course Astronomy #41
Astronomy