... 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 (>332) - www.badastronomy.com/ )

... 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 (>6394) - www.arcetri.astro.it/ )

• APOD: December 8, 1996 - Degas Ray Crater on Mercury
• Galileo to Jupiter
• Galileo Mission Status - December 10, 1995

... 2008 December 30 . Home from Above . Credit: Expedition 18 Crew , NASA . Explanation: There's no place like home . Peering out of the window of the International Space Station (ISS), astronaut Greg Chamitoff takes in the planet on which we were all born. About 350 kilometers up, the ISS is high enough so that the Earth's horizon appears clearly curved . ... The space station orbits the Earth about once every 90 minutes. ... Note : APOD Editor to Speak in New York on Jan. ...

Еще в разделе: (Показать все результаты (>5482) - www.sai.msu.su/ )

• APOD: 2007 December 2 - Gibbous Europa
• APOD: 2013 December 15 - Gibbous Europa
• APOD: 2013 December 29 - Time Lapse Auroras Over Norway

... 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 (>2488) - star.arm.ac.uk/ )

• Geminid Meteors
• The Twins' Meteors, Geminid Meteors

... Interstellar Dust Bunnies of NGC 891 . ... Photographs released last week showed clouds forming above Tharsis, a huge bulge on Mars about 4000 kilometers across and 7 kilometers high containing several large volcanoes. ... Asteroids . ... When the Moon's shadow reached out and touched the Earth last month, the result was a Solar Eclipse. Such an eclipse is total only for observers located along a narrow path corresponding to the ground track of the shadow's dark central portion or "umbra". ...

Еще в разделе: (Показать все результаты (>128792) - www.astronet.ru/ )

... 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 (>6653) - www.astronomy.com/ )

• Can you explain Mercury's retrograde motion? Do other planets appear to do this

Four spacecraft: INTERBALL Tail probe (IB_TAIL), Auroral probe (IB_AUR), 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 (>1747) - www.cosmos.ru/ )

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

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 (>2800) - www.armaghplanet.com/ )

• Stargazing in December | Astronotes
• December | Astronotes
• How Venus will kill you in less than 10 seconds | Astronotes

The Sun is our nearest star and the source of energy for life on Earth. ... For centuries astronomers wondered whether they were clouds floating in the Sun's atmosphere, but we now know that they really are huge regions of magnetic field, about as intense as the field at the poles of an iron magnet. ... Such abrupt events were named solar flares , and what made them especially interesting was that occasionally, after a prominent flare, a magnetic storm would erupt on Earth. ...

Еще в разделе: (Показать все результаты (>1411) - www.iki.rssi.ru/ )

• Galileo to Jupiter
• The Wind Spacecraft
• Galileo Mission Status - December 10, 1995

... 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 (>11420) - 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 (>19466) - 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

... 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 ...