... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

Еще в разделе: (Показать все результаты (>324) - www.badastronomy.com/ )

... 2013 December 15 . Gibbous Europa . Image Credit: Galileo Project , JPL , NASA ; Copyright: reprocessed by Ted Stryk . Explanation: Although the phase of this moon might appear familiar, the moon itself might not. In fact, this gibbous phase shows part of Jupiter 's moon Europa . ... Recent observations by the Hubble Space Telescope have uncovered new evidence that Europa, like Saturn's moon Enceladus , has ice venting from its surface. ... About APOD | ...

Еще в разделе: (Показать все результаты (>5368) - www.sai.msu.su/ )

• APOD: 2007 December 2 - Gibbous Europa
• APOD: 2008 December 30 - Home from Above
• APOD: 2003 December 16 - Retrograde Mars

... Chain of Impact Craters Suggested by Spaceborne Radar Images . ... From space, astronauts often get the impression that the Earth is small with a thin, fragile layer of atmosphere. ... Galileo Earth Encounter . ... The Earth and Moon were imaged by Mariner 10 from 2.6 million kilometers while completing the first ever Earth-Moon encounter by a spacecraft capable of returning high resolution digital color image data. ... During its flight, the Galileo spacecraft returned images of the Earth and Moon....

Еще в разделе: (Показать все результаты (>6368) - www.arcetri.astro.it/ )

• APOD: December 8, 1996 - Degas Ray Crater on Mercury
• Astronomy Picture of the Day
• New Discoveries From Galileo

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Although the comet itself never comes dangerously close to the Earth, the particles of dust that it has shed during its many past passages through perihelion found their way into the Earth's atmosphere, appearing as meteors in the cold December sky. ... Animation 1 . ... An Ursid meteor captured by the Armagh Observatory's NE-facing meteor camera in the early morning of 23rd December. ... Meteor Showers Online . ...

Еще в разделе: (Показать все результаты (>2394) - star.arm.ac.uk/ )

• Geminid Meteors
• The Twins' Meteors, Geminid Meteors

... The Solar System from MESSENGER . ... The Sun's planets all appear as points of light, with the closest and largest planets appearing the brightest. Star Size Comparisons . ... To help illustrate the answer, a beautiful land, cloud, and skyscape was captured earlier this month over NeuchБtel, Switzerland. ... What's happened to these clouds? ... Spiral Galaxy NGC 2841 Close Up . ... Planetary Nebula Project . ... Inside the nebula lies an open cluster of bright young stars designated NGC 2244. ...

Еще в разделе: (Показать все результаты (>128318) - www.astronet.ru/ )

Four spacecraft: INTERBALL Tail probe (IB_TAIL), MAGION 5 (IB_MAG5), POLAR(NASA/ISAS), GEOTAIL (NASA) are considered. Click icons to make large pictures. ... FSP criteria | FSP ASCII file | Four spacecraft . in the FSP situations . ASCII file . ... Magnetic conjugations . ASCII files : . ... The mulisatellites conjugations : . ... The FSP polar diagram . Click hear for more detailed information about each of four orbits. ... IKI RAN | SSC IKI RAN | ...

Еще в разделе: (Показать все результаты (>1687) - www.cosmos.ru/ )

• Campaign 2, December 1997
• Campaign 2, December 1998
• Campaign 2, December 1999 (continue)

... Gift Center . ... Why do aurorae appear strongest within rings centered on Earth's poles instead of filled-in circles? ... RELATED TOPICS: AURORAE . The visible aurorae result from electrons that move along magnetic field lines from space into the upper atmosphere. ... Just make sure you're registered with the website. Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ...

Еще в разделе: (Показать все результаты (>6570) - www.astronomy.com/ )

• Can you explain Mercury's retrograde motion? Do other planets appear to do this
• Why do sunspots appear in groups? | Astronomy.com

... The material contained in this Handbook is derived from ground tests and design information obtained by the IDT and the engineering team at JPL, and from on-orbit measurements. ... HST Phase II Proposal Instructions , (Version 8.0, 15 December 1995). ... Calibrating Hubble Space Telescope: Post Service Mission (1995).1 . ... The Imaging Performance of the Hubble Space Telescope , Burrows, C. J., et. al., ... The Performance and Calibration of WFPC2 on the Hubble Space Telescope, Holtzman, J., et al....

Еще в разделе: (Показать все результаты (>10974) - www.stsci.edu/ )

• STAN - December 1998
• What is the offset in the U2 direction that can be taken before a gap appears?
• HST this week: 363

... Sun images . ... December : 2015 . ... Image of Sun's photosphere obtained 09.12.2015 at 23:40 UT with HMI instrument on board SDO spacecraft . ... Image of Sun's magnetic field obtained 09.12.2015 at 23:28 UT with HMI instrument on board SDO spacecraft . ... Image of Sun's transition region obtained 09.12.2015 at 23:39 UT with AIA instrument on board SDO spacecraft . Image of Sun's corona . Image of Sun's corona obtained 09.12.2015 at 23:39 UT with AIA instrument on board SDO spacecraft . ...

Еще в разделе: (Показать все результаты (>19460) - www.tesis.lebedev.ru/ )

• Latest images of the Sun December 12, 2008
• Latest images of the Sun December 12, 2015
• Latest images of the Sun December 11, 2014

... It was designed to observe the solar wind approaching Earth, from a position near the Lagrangian point L1, and it is part of the International Solar-Terrestrial Physics (ISTP) Initiative . ... The original plan called for "Wind" to approach its final station over two years, undergoing two close encounters with the Moon to boost its speed. ... If however the object is moving , the encounter is not symmetric, and in the end the spacecraft may have gained or lost speed, depending on its trajectory. ...

Еще в разделе: (Показать все результаты (>1377) - www.iki.rssi.ru/ )

• The Sun
• Galileo Crosses Boundary Into Jupiter's Environment
• Magnetopause [Oulu]

... EXPN DNO D A T E UT TIME FQ SOURCE CORR-Telescopes VT734 355-MO Dec 21 08:00-21:00 C TAU-A Pointing VT735 356-TU Dec 22 08:00-21:00 C TAU-A Pointing VT736 358-TH Dec 24 09:00-20:00 K ORIONKL Pointing VT737 359-FR Dec 25 09:00-20:00 K ORIONKL Pointing VT738 360-SA Dec 26 09:00-20:00 C 0528+134 Mitk-UD KA SH W018c 364-WE Dec 30 06:00-15:00 L 0552+398 Socr-VLBA W071n 6-WE Jan 06 10:00-17:00 L J0745+10 Mitk-AT HO MP UD SH KA W059e 7-TH ...

Еще в разделе: (Показать все результаты (>9315) - www.atnf.csiro.au/ )

• Diffuse gas in and around the Milky Way - Programme
• ATNF Media Release - December 1, 1998
• December 2005 ATUC meeting agenda and supporting documents

Astronotes Armagh Planetarium's Stellar Blog! ... Space Flight . ... Earth Satellites . ... Leonid meteors seen from 13 km altitude aboard an aircraft during the 1999 Leonids Multi-Instrument Aircraft Campaign (Leonid-MAC). Comet Tempel-Tuttle provides the cometary debris for the Leonid meteor shower. ... Every 17-19 November Earth crosses Tempel-TuttleтАЩs orbit and the Leonids become visible. With clear, dark skies observers may see 10 to 15 Leonid meteors every hour on those mornings. ...

Еще в разделе: (Показать все результаты (>2798) - www.armaghplanet.com/ )

• December | Astronotes
• Water on Mars: Evidence from NASA | Astronotes
• History of the Universe in a Year | Astronotes

The Many Streams of the Magellanic Stream . ... As a part of the ongoing GALFA survey we have obtained an H I image of a region located at the tip of the Magellanic Stream. ... Figure 1 shows the velocity field of the tip of the Stream. ... Comparison with numerical simulations by Connors et al. (2006) suggests that a 3-way splitting of the main Stream filament may have taken place due to gravitational interactions between the SMC, the LMC, and the Galaxy. ... 2006) . ...

Еще в разделе: (Показать все результаты (>1922) - www.naic.edu/ )

• The Pleiades
• ALFA Sky Angle Tracking
• Arecibo Radar Discovers Triple Near-Earth Asteroid

Browse the articles below for new ideas for your classroom. Mercury September/October 2005: Astronomy Education and Public Outreach: Steps and Missteps Toward an Emerging Profession (pdf) . Focus on Education articles as they appeared in Mercury: . ... March/April 2000: . ... Education Newswire articles as they appeared in Mercury, by issue. ... January/February 2000 . November/December 1999 . ... March/April 1999 . ... November/December 1998 . ... November/December 1997 . ...

Еще в разделе: (Показать все результаты (>1157) - www.astrosociety.org/ )

• ASP: Shadow Play: 1998's Total Solar Eclipse
• ASP: Exploring Venus
• ASP: Star Science in the Autumn Sky

The program "Pioneer" . Pioneer - 10", the first space vehicle started in March, 1972 to the Jove, has reached . ... This photo of the Jove was received December, 1, 1973 when space probe " pioneer - 10 " has come nearer to a planet on distance 2,5 million km. ... This photo was received by "Pioneer - 11" December, 6, 1974 from distance 1,1 million km from a planet. ... The picture is received in December, 12, 1974 when "Pioneer - 11" was on distance of 1207 thousand kms from the Jove. ...

Еще в разделе: (Показать все результаты (>47) - www.schools.keldysh.ru/ )

THE RELATIVE MONTHLY MEAN SUNSPOT NUMBER ON DECEMBER 2013 HAS MADE Wdec.= 61.4, THAT GIVES FOR 42 MONTH (2012, JUNE) DEVELOPMENT CURRENT 24 CYCLES OF SOLAR ACTIVITY THE SMOOTHED MONTHLY MEAN SUNSPOT NUMBER W*june= 61.7 THE BEGINNING 24 CYCLES OF SOLAR ACTIVITY - I 2009 with W*=1.8 THE MOST PROBABLE TIME OF THE MAXIMUM OF THE CURRENT CYCLE- XI.2012 - III 2013 THE MOST PROBABLE HEIGHT OF THE MAXIMUM - Wmax = 66 - 75. ... NEXT WEEK THE LEVEL OF SUNSPOT ACTIVITY IS EXPECTED TO BE THE HIGH AND AVERAGE. ...

Еще в разделе: (Показать все результаты (>691) - www.izmiran.rssi.ru/ )

• Chains and CMEs
• VEGA pr-7

Accretion torques in windaccreting pulsars Nikolay Shakura Sternberg Astronomical Institute Moscow, Russia K.Postnov (SAI), D. Klochkov, V. Doroshenko, V. Suleimanov (IAAT), L. Hjalmarsdotter (SAI) December 2010 HEA-2010 1 Outline Introduction: disc and quasi-spherical accretion Settling accretion regime Spin-up/spin-down torques Specific pulsars Conclusions December 2010 HEA-2010 2 I. Disc and quasi-spherical accretion December 2010 HEA-2010 3 Disc accretion Shakura N.I. Astron. ... 2010 15 III. ...

Еще в разделе: (Показать все результаты (>276) - hea.iki.rssi.ru/ )

• http://hea.iki.rssi.ru/conf/hea2007/presentations/26.12.2007/02-cherepashchuk.pdf
• GRANAT Home Page

... Archive for December 2007 . Dec 31st, 2007| 08:48 pm | Posted by hlee . ... Continue reading ?[ ... Tags: Bayesian , bootstrap , Efron , Frequentist , MCMC . Category: arXiv , Quotes | ... Continue reading ?The last [ArXiv] of 2007? ... Category: arXiv | ... Dec 24th, 2007| 10:36 pm | ... Dec 21st, 2007| 02:40 pm | ... ArXiv] 3rd week, Dec. ... Category: arXiv , CHASC , Cross-Cultural , Misc | ... Dec 14th, 2007| 05:53 pm | ... Tags: about , reading comprehension , reading level , slog . ...

Еще в разделе: (Показать все результаты (>1699) - hea-www.harvard.edu/ )

• The galaxy M100
• The AstroStat Slog 2009 December
• The AstroStat Slog 2010 December

Meade Forum Message . Forums: . ... Eyepieces ћ Meade ћ Misc. ... Discussion Forums | Meade Equipment Discussion | ... Magnification On ETX 90EC . Forum List | ... Post Message | ... Posted by Joel Howard on December 4, 2005 12:10:04 UTC . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

Еще в разделе: (Показать все результаты (>464) - www.astronomy.net/ )

• Education Discussion Forum - Hosted by The Astronomy Net
• Astronomy articles, forums, listings, and other resources about Astronomy.
• New Model: How Do The Sun And Moon Appear To Move Across The Sky - an Astronomy

... Laboratory for Spectroscopy of Molecular Structures . ... News . ... A new article entitled Description of optical properties of cholesteric photonic liquid crystals based on Maxwell equations and Kramers-Kronig relations has appeared in Physical Review E. Congratulations to Grigoriy Ksyonz on his first publication! . 25 th February 2013 . ... 22 nd November 2012 . ... 22 nd February 2012 . 4 th Workshop on Liquid Crystals for Photonics 2012 will take place in Hong Kong December 9-11, 2012. ...

Еще в разделе: (Показать все результаты (>1022) - www.issp.ac.ru/ )

• The 2 nd Asian-Pacific Astronomy Olympiad
• The IV Asian-Pacific Astronomy Olympiad
• The Asian-Pacific Astronomy Olympiad - Азиатско-Тихоокеанская астрономическая