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На этой странице приведены все страницы сервера www.sai.msu.su ,которые мы индексируем. Показаны документы 1681 - 1700 из 11449.
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1681. APOD: 2013 December 5 - Planetary Nebula Abell 7
... 2013 December 5 . Planetary Nebula Abell 7 . ... Explanation: Very faint planetary nebula Abell 7 is some 1,800 light-years distant, just south of Orion in planet Earth's skies in the constellation Lepus, The Hare . ... A planetary nebula represents a very brief final phase in stellar evolution that our own Sun will experience 5 billion years hence , as the nebula's central, once sun-like star shrugs off its outer layers. ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...
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Ссылки http://www.sai.msu.su/apod/ap131205.html -- 5.0 Кб -- 28.02.2014
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1682. APOD: 2013 December 4 - Comet Lovejoy through Morby Castle Ruins
... 2013 December 4 . Comet Lovejoy through MЖrby Castle Ruins . ... Comet Lovejoy, discovered only three months ago, was imaged through ruins of ancient MЖrby Castle in Sweden last week sporting a green-glowing coma and tails trailing several degrees. ... C/2013 R1 (Lovejoy) comet is currently visible to the unaided eye from a dark location. ... In two and a half weeks, Comet Lovejoy will reach its closest approach to the Sun at a distance just inside the orbital distance of the Earth. ...
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Ссылки http://www.sai.msu.su/apod/ap131204.html -- 5.6 Кб -- 28.02.2014
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1683. APOD: 2013 December 3 - The Colorful Clouds of Rho Ophiuchi
... 2013 December 3 . The Colorful Clouds of Rho Ophiuchi . ... Explanation: The many spectacular colors of the Rho Ophiuchi (oh'-fee-yu-kee) clouds highlight the many processes that occur there. The blue regions shine primarily by reflected light. ... The Rho Ophiuchi star clouds , well in front of the globular cluster M4 visible above on lower left, are even more colorful than humans can see - the clouds emits light in every wavelength band from the radio to the gamma-ray . ... About APOD | ...
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Ссылки http://www.sai.msu.su/apod/ap131203.html -- 5.7 Кб -- 28.02.2014
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1684. APOD: 2013 December 2 - Comet Lovejoy Before Galaxy M63
... 2013 December 2 . Comet Lovejoy Before Galaxy M63 . ... Explanation: Comet Lovejoy was captured last week passing well in front of spiral galaxy M63. Discovered only three months ago and currently near its maximum brightness, Comet Lovejoy can be seen near the Big Dipper from dark northerly locations before dawn with the unaided eye. An unexpected rival to Comet ISON , C/2013 R1 ( Lovejoy ), pictured above, is currently sporting a large green coma and a beautifully textured ion tail . ...
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Ссылки http://www.sai.msu.su/apod/ap131202.html -- 5.3 Кб -- 28.02.2014
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1685. APOD: 2013 December 1 - A Laser Strike at the Galactic Center
... 2013 December 1 . A Laser Strike at the Galactic Center . ... Explanation: Why are these people shooting a powerful laser into the center of our Galaxy? ... Constant imaging of high-altitude atoms excited by the laser -- which appear like an artificial star -- allow astronomers to instantly measure atmospheric blurring . ... In this case , a VLT was observing our Galaxy's center , and so Earth's atmospheric blurring in that direction was needed. ... About APOD | ...
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Ссылки http://www.sai.msu.su/apod/ap131201.html -- 5.5 Кб -- 28.02.2014
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1686. APOD: 2013 November 29 - Comet ISON Before and After
... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2013 November 29 . Comet ISON Before and After . Image Credit: NASA , SOHO . Explanation: Sungrazing Comet ISON reached perihelion, its closest approach to the Sun, yesterday, November 28, at 18:45 UT. ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . NASA Web Privacy Policy and Important Notices . ...
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Ссылки http://www.sai.msu.su/apod/ap131129.html -- 4.7 Кб -- 28.02.2014
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1687. APOD: 2013 November 30 - Surprising Comet ISON
... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2013 November 30 . Surprising Comet ISON . Image Credit: NASA , ESA , SOHO - Video Editing: Babak Tafreshi ( TWAN ) . ... But ISON surprised observers yesterday as material still traveling along the comet's trajectory became visible and even developed an extensive fan-shaped dust tail. ... About APOD | ... A service of: ASD at NASA / GSFC . ...
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Ссылки http://www.sai.msu.su/apod/ap131130.html -- 5.3 Кб -- 28.02.2014
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1688. APOD: 2013 November 28 - NGC 1999: South of Orion
... 2013 November 28 . NGC 1999: South of Orion . ... Explanation: South of the large star-forming region known as the Orion Nebula, lies bright blue reflection nebula NGC 1999 . At the edge of the Orion molecular cloud complex some 1,500 light-years distant, NGC 1999's illumination is provided by the embedded variable star V380 Orionis. ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . NASA Web Privacy Policy and Important Notices . ...
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Ссылки http://www.sai.msu.su/apod/ap131128.html -- 5.7 Кб -- 28.02.2014
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1689. APOD: 2013 November 27 - Comet ISON Rising
... 2013 November 27 . Comet ISON Rising . Video Credit Copyright: Copyright : Juan Carlos Casado ( TWAN , Earth and Stars ) . Explanation: Will Comet ISON survive tomorrow's close encounter with the Sun? ... Pictured in the above short time lapse video, Comet ISON was captured rising over the Canary Islands just above the morning Sun a few days ago. If the comet's nucleus survives, the coma and the tails it sheds might well be visible rising ahead of the Sun in the next few days or weeks. ...
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Ссылки http://www.sai.msu.su/apod/ap131127.html -- 5.5 Кб -- 28.02.2014
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1690. APOD: 2013 November 26 - Cap Cloud over the Sierra Nevadas
... 2013 November 26 . Cap Cloud over the Sierra Nevadas . ... Explanation: One might say this was a bell weather day for the Sierra Nevada mountains . ... Such a Cap cloud is formed by air forced upwards by a mountain peak , with the air then cooling , saturating with moisture, and finally having its molecular water condense into cloud droplets . Such a bell -shaped cloud structure is unusual as air typically moves horizontally, making most clouds nearly flat across at the bottom. ...
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Ссылки http://www.sai.msu.su/apod/ap131126.html -- 5.4 Кб -- 28.02.2014
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1691. APOD: 2013 November 25 - Anemic Spiral NGC 4921 from Hubble
... 2013 November 25 . Anemic Spiral NGC 4921 from Hubble . Image Credit: Data - Hubble Legacy Archive , ESA , NASA ; Processing - Roberto Colombari . Explanation: How far away is spiral galaxy NGC 4921? ... The magnificent spiral NGC 4921 has been informally dubbed anemic because of its low rate of star formation and low surface brightness . ... Free lecture: APOD editor to speak in NYC on Jan. ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...
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Ссылки http://www.sai.msu.su/apod/ap131125.html -- 6.7 Кб -- 28.02.2014
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1692. APOD: 2013 November 24 - Comet Hale Bopp Over Indian Cove
... 2013 November 24 . Comet Hale-Bopp Over Indian Cove . ... Explanation: Comet Hale-Bopp, the Great Comet of 1997, was quite a sight. In the above photograph taken on 1997 April 6, Comet Hale-Bopp was imaged from the Indian Cove Campground in the Joshua Tree National Park in California , USA . ... As Comet ISON approaches the Sun this week , sky enthusiasts around the Earth are waiting to see if its tails will become even more spectacular than those displayed by Comet Hale-Bopp. ... About APOD | ...
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Ссылки http://www.sai.msu.su/apod/ap131124.html -- 5.2 Кб -- 28.02.2014
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1693. APOD: 2013 November 23 - Comet ISON from STEREO
... 2013 November 23 . Comet ISON from STEREO . Image Credit: Karl Battams , NASA , STEREO , CIOC . ... The camera has also captured periodic Comet Encke, Mercury, and Earth, with the Sun cropped out of the frame at the right, the source of the billowing solar wind. ... Cameras on STEREO and SOHO spacecraft will be able to follow Comet ISON as it falls towards its close encounter with the Sun on November 28, even as ISON gets more difficult to see in the bright dawn skies of planet Earth. ...
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Ссылки http://www.sai.msu.su/apod/ap131123.html -- 5.3 Кб -- 28.02.2014
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1694. APOD: 2013 November 22 - From California to the Pleiades
... 2013 November 22 . From California to the Pleiades . ... Explanation: An astronomical trip from the California Nebula to the Pleiades star cluster would cover just over 12 degrees across planet Earth's night sky. ... On the left, cataloged as NGC 1499, the California Nebula does have a familiar shape, though its coastline is actually over 60 light-years long and lies about 1,500 light-years away. ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...
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Ссылки http://www.sai.msu.su/apod/ap131122.html -- 5.2 Кб -- 28.02.2014
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1695. APOD: 2013 November 21 - The Trail of a Minotaur
... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2013 November 21 . The Trail of a Minotaur . ... Explanation: Star trails arc above a moonlit beach and jetty in this serene sea and night skyscape. ... But the longest and brightest trail is a Minotaur 1 rocket , a stage separation and exhaust plume visible along the rocket's fiery path toward low Earth orbit. ... About APOD | ...
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Ссылки http://www.sai.msu.su/apod/ap131121.html -- 4.8 Кб -- 28.02.2014
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1696. APOD: 2013 November 20 - Heavy Black Hole Jets in 4U1630-47
... 2013 November 20 . Heavy Black Hole Jets in 4U1630-47 . Illustration Credit: NASA , CXC , M. Weiss . Explanation: What are black hole jets made of? Many black holes in stellar systems are surely surrounded by disks of gas and plasma gravitationally pulled from a close binary star companion. ... The 4U1630-47 star system is depicted above in an artist's illustration, with a large blue star on the right and jets emanating from a black hole in the center of the accretion disc on the left. ...
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Ссылки http://www.sai.msu.su/apod/ap131120.html -- 6.1 Кб -- 28.02.2014
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1697. APOD: 2013 November 19 - Globular Cluster M15 from Hubble
... 2013 November 19 . Globular Cluster M15 from Hubble . Image Credit: ESA , Hubble , NASA . Explanation: Stars, like bees, swarm around the center of bright globular cluster M15. ... M15 , one of about 170 globular clusters remaining, is noted for being easily visible with only binoculars , having at its center one of the densest concentrations of stars known, and containing a high abundance of variable stars and pulsars . ... Gallery: Comets 2013 . ... About APOD | ...
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Ссылки http://www.sai.msu.su/apod/ap131119.html -- 5.5 Кб -- 28.02.2014
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1698. APOD: 2013 November 18 - Aurora and Unusual Clouds Over Iceland
... 2013 November 18 . Aurora and Unusual Clouds Over Iceland . ... On the far left, bright green auroras appear to emanate from the glacier as if it was a volcano . ... On the far right is a long and unusual lenticular cloud tinged with green light emitted from another aurora well behind it. Just above this lenticular cloud are unusual iridescent lenticular clouds displaying a broad spectral range of colors. ... Happy Holidays: Free APOD 2014 Calendar in PDF format . ... About APOD | ...
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Ссылки http://www.sai.msu.su/apod/ap131118.html -- 5.1 Кб -- 28.02.2014
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1699. APOD: 2013 November 17 - The Magnificent Tail of Comet McNaught
... 2013 November 17 . The Magnificent Tail of Comet McNaught . Image Credit Copyright: Robert H. McNaught . ... The magnificent tail spread across the sky and was visible for several days to Southern Hemisphere observers just after sunset. ... During some times, just the tail itself estimated to attain a peak brightness of magnitude -5 (minus five), was caught by the comet's discoverer in the above image just after sunset in January 2007 from Siding Spring Observatory in Australia . ...
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Ссылки http://www.sai.msu.su/apod/ap131117.html -- 5.5 Кб -- 28.02.2014
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1700. APOD: 2013 November 16 - Active Comet ISON
... 2013 November 16 . Active Comet ISON . ... Explanation: Falling through planet Earth's predawn skies toward its close encounter with the Sun on November 28, Comet ISON is coming to life . The much anticipated comet has now been reported to have substantially increased in activity, surging to naked-eye visibility for dark sites and sprouting a more complex tail. ISON's tail stretches over two degrees in this telephoto skyview from southern Kenya , captured on the morning of November 14. ...
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Ссылки http://www.sai.msu.su/apod/ap131116.html -- 5.0 Кб -- 28.02.2014
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