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Messier 15
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Messier 15 (also M15, NGC 7078, Struve 9 and GCL 120) is a magnitude +6.2 globular star cluster located 33,600 light-years away in the constellation Pegasus. The cluster is filled with old orange and yellow giants stars. Pease 1 is a planetary nebula located within the globular cluster. The cluste...
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Messier 52
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Messier 52 (also M52, NGC 7654 and OCL 260) is a magnitude +5.0 open star cluster located 5,000 ±2000 light-years away in the constellation Cassiopeia. The cluster was discovered by French astronomer Charles Messier using a 8.38 cm (3.3-inch) refracting telescope at the Hôtel de Cluny (now the Mus...
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NGC 458
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NGC 458 (also ESO 51-SC26 and GC 257) is a magnitude +10.5 open star cluster in the Small Magellanic Cloud located in the constellation Tucana. The cluster was discovered by Scottish astronomer James Dunlop using a homemade 9-foot 22.86 cm (9 inch) f/12 speculum Newtonian reflector at Paramatta, N...
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Messier76
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Credit Stefan Seip
Position(2000): RA = 1°41′ 58.8" Dec = 51°34′ 32.94"
M76 is recognised as a planetary nebula - a gaseous shroud cast off by a dying sunlike star. The nebula itself is thought t...
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IV. Lupus Interstellar Cloud
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Title: The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds. IV. Lupus Observed with MIPS Authors: Nicholas L. Chapman, Shih-Ping Lai, Lee G. Mundy, Neal J. Evans II, Timothy Y. Brooke, Lucas A. Cieza, William J. Spiesman, Luisa M. Rebull, Karl R. Stapelfeldt, Alberto Noriega-Crespo, La...
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NGC 6620
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NGC 6620 (also ESO 522-PN22 and PK 5-6.1) is a magnitude +12.7 planetary nebula located in the constellation Sagittarius. The planetary nebula was discovered by American astronomer Edward Charles Pickering using a 38.1 cm (15 inch) refractor at the Harvard College Observatory on the 3rd Septem...
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Messier 37
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Messier 37 (also M37, NGC 2099, Mel 38, Cr 75 and OCL 451) is a magnitude +6.2 open star cluster located 4,511 light-years away in the constellation Auriga. The cluster (along with M36 and M38) was discovered by by Italian astronomer Giovanni Battista Hodierna with probably a 1-inch 20x Galilean ref...
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Kesteven 79
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Title: The Hidden Magnetic Field of The Young Neutron Star in Kesteven 79 Authors: Natalia Shabaltas, Dong Lai Recent observations of the central compact object in the Kesteven 79 supernova remnant show that this neutron star (NS) has a weak dipole magnetic field (a few x 10^{10} G) but an anomalous...
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Messier 70
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Hubble Sees Messier 70: Tight and Bright In this image, the NASA/ESA Hubble Space Telescope has captured the brilliance of the compact center of Messier 70, a globular cluster. Quarters are always tight in globular clusters, where the mutual hold of gravity binds together hundreds of thousands of...
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Messier 69
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Hubble Sees Cosmic Riches This dazzling image shows the globular cluster Messier 69, or M 69 for short, as viewed through the NASA/ESA Hubble Space Telescope. Globular clusters are dense collections of old stars. In this picture, foreground stars look big and golden when set against the backdrop o...
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NGC 6914
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NGC 6914 (also LBN 274) is a magnitude +6.6 reflection nebula located 6,000 light-years away in the constellation of Cygnus. The dusty blue reflection nebula covers an area of 1.2 degrees. Ultraviolet radiation from hot, young stars ionises hydrogen gas in the region; protons and electrons rec...
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Messier 72
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Messier 72 (also known as M72 or NGC 6981) is a globular cluster in the Aquarius constellation discovered by Pierre Méchain on August 29, 1780. Charles Messier looked for it on the following October 4 and 5, and included it in his catalogue. Both decided that it was a faint nebula rather than a cluster....
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Cepheids
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Title: The Cepheid Period-Luminosity Relation (The Leavitt Law) at Mid-Infrared Wavelengths: III. Cepheids in NGC 6822 Authors: Barry F. Madore, Jane Rigby, Wendy L. Freedman, S. E. Persson, Laura Sturch, Violet Mager We present the first application of mid-infrared Period-Luminosity relat...
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NGC 6589
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NGC 6589 (also IC 4690 and ESO 590-N14) is a magnitude +12.6 reflection nebula located in the constellation Sagittarius. The nebula was discovered by American astronomer Truman Henry Safford using a 46.99 cm (18.5-inch) Alvan Clark & Sons refractor at Dearborn Observatory, at 3400 S. Cottag...
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Messier33
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Position(2000): RA = 01 : 33.9 Dec = +30 : 39
This X-ray image, showing a mosaic o...
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