... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Risks Comparable to NEOs . ... The Increasing Rate of Discovery of Asteroids . ... Comet and Asteroid Collision Probabilities . ... Extreme albedo comets and the impact hazard (PDF Format) . ... Asteroid Impact Animations . ... Workshop on Scientific Requirements for Mitigation of Hazardous Comets and Asteroids - 2002 . ... The Spaceguard Survey Report, 1992 (PDF) . Tsunami from Asteroid/Comet Impacts . ...

Еще в разделе: (Показать все результаты (>2779) - star.arm.ac.uk/ )

... The First Explorer . ... What's happening in the eye-like center of this planetary nebula? ... Hyakutake: The Great Comet of 1996? ... Above are two microwave images of the sky, looking north and south of our galaxy's equator, based on data from NASA's COBE satellite. ... The Sun orbits the center of the Milky Way Galaxy. The Milky Way Galaxy orbits in the Local Group. ... What's the closest galaxy to our Milky Way? ... What hit Mars? ... What is the shape and composition of our Milky Way Galaxy? ...

Еще в разделе: (Показать все результаты (>135827) - www.astronet.ru/ )

M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

Еще в разделе: (Показать все результаты (>395) - zebu.uoregon.edu/ )

... 2015 December 11 . The Brightest Spot on Ceres . Image Credit: NASA , JPL-Caltech , UCLA , MPS/DLR/IDA . ... Exploring Ceres from orbit since March, the Dawn spacecraft's camera has revealed about 130 or so mysterious bright spots, mostly associated with impact craters scattered around the small world's otherwise dark surface. ... Since impacts would have exposed the material, Ceres' numerous and widely scattered bright spots may indicate the presence of a subsurface shell of ice-salt mix. ...

Еще в разделе: (Показать все результаты (>6406) - www.sai.msu.su/ )

• APOD: 2005 December 2 - Crab Nebula Mosaic from HST
• Kuiper-Oort
• APOD: 2011 December 27 - M27: The Dumbbell Nebula

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Our Galaxy . ... Stars . ... Space Flight . ... This activity is believed to be promoting the unusually high rate of star formation seen in M82. ... Radio image of M82 made with the MERLIN and VLA telescopes. Insets show MERLIN images from April 25th and May 3rd 2009 demonstrating the sudden appearance of the mystery object.€а All images are at a frequency of 5 GHz. ... Mystery object in Starburst Galaxy M82 . ...

Еще в разделе: (Показать все результаты (>2811) - www.armaghplanet.com/ )

• Universe | Astronotes - Part 2
• Rings Around an Asteroid | Astronotes
• Tycho Crater's spectacular central peak | Astronotes

... Carefully measure the diameter of the craters formed by the impact without disturbing the sand. ... Crater diameter increases with increasing mass. ... Without disturbing the sand, carefully measure the crater diameter. ... Did you measure any difference in the diameters of the craters? Yes, as velocity increases, so does crater diameter. ... Impact cratering. ... Impact craters can be demonstrated with younger or less advanced students using mud instead of sand and ball bearings. ...

Еще в разделе: (Показать все результаты (>1342) - www.astrosociety.org/ )

• ASP: A Good Definition of the Word "Planet": Mission Impossible?
• ASP: More About Deep Space Objects and Cosmic Terms
• ASP: Monster Comet Promises Big Show

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...

Еще в разделе: (Показать все результаты (>740) - www.mso.anu.edu.au/ )

• What’s this got to do with velocities?
• Siding Spring Survey 2003 XB22
• GSAOI Magellanic Cloud Planetary Nebulae Science Page

... Radiation mechanisms of astrophysical objects: classics today . ... 18 March, 2015 - Registration opens . 2 April, 2015 - Abstract submission opens . 15 August, 2015 - Registration and abstract submission deadline . 27 August, 2015 - Programme available . 21 September, 2015 - Conference opens . 25 September, 2015 - Conference closes . ... Key dates . ... Conference program . Conference poster . Conference venue . Conference proceedings . ...

Еще в разделе: (Показать все результаты (>232) - www.astro.spbu.ru/ )

• Radiation mechanisms of astrophysical objects: classics today | Механизмы
• Photogallery | Radiation mechanisms of astrophysical objects: classics today
• Conference venue | Radiation mechanisms of astrophysical objects: classics...

... For the past years I have been working on the problem of synthesis of light curves of close binary systems, consisting of a normal star and a compact object (point object with fixed X-ray luminosity). ... Possible existence of a bright spot on the disk's lateral surface is taken into account. ... The last of then will be published in Gordon and Breach Publishers ( Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ... Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ...

Еще в разделе: (Показать все результаты (>22) - uranus.sai.msu.ru/ )

• Eugene Trunkovsky
• Elena Seifina
• The Database of Close Binary Systems

The Moon orbits around the Earth. ... To keep the Moon moving in that circle--rather than wandering off--the Earth must exert a pull on the Moon, and Newton named that pulling force gravity . ... If it was the same force, then a connection would exist between the way objects fell and the motion of the Moon around Earth, that is, its distance and orbital period. ... Newton went further and proposed that gravity was a "universal" force, and that the Sun's gravity was what held planets in their orbits. ...

Еще в разделе: (Показать все результаты (>1079) - www.iki.rssi.ru/ )

• Kuiper-Oort
• SmallBodies in the Solar System
• The Wind Spacecraft

... ESO Acronyms . ... Quasars and Black Holes . ... Black Hole at the Centre of our Galaxy . ... This view shows a simulation of how a gas cloud that has been observed approaching the supermassive black hole at the centre of the galaxy may break apart over the next few years. This is the first time ever that the approach of such a doomed cloud to a supermassive black hole has been observed and it is expected to break up completely during 2013. ... Milky Way : Galaxy : Component : Central Black Hole . ...

Еще в разделе: (Показать все результаты (>66522) - www.eso.org/ )

• ESO - Science Announcements
• Animation of objects orbiting the centre of the Milky Way | ESO
• A close look at an APEX view of part of the Orion Nebula | ESO

NASA's Near-Earth Object Program Office . ... This paper briefly presents the history, interactions and current activities of NASA's Near-Earth Object Program Office. The Program Office utilizes near-Earth object (NEO) astrometric data from the international community, received from the Minor Planet Center, to refine orbits and provide predictions for coming Earth close approaches. ... Recent studies of some of the issues surrounding the deflection of an Earth threatening NEO are also described. ...

Еще в разделе: (Показать все результаты (>572) - www.ipa.nw.ru/ )

• Keywords_115
• Keywords_268
• Keywords_302

... Asteroid 4179 . ... The vast majority of asteroids, and all the planets, spin about a single axis, like a football thrown in a perfect spiral, but Toutatis tumbles like a flubbed pass," said Dr. Scott Hudson of Washington State University. ... This image shows the shape and non-principal-axis spin state of asteroid 4179 Toutatis rendered at a particular instant. ... This image shows the non-principal-axis spin state of asteroid 4179 Toutatis at one-day intervals (from left to right, top to bottom). ...

Еще в разделе: (Показать все результаты (>7895) - www.arcetri.astro.it/ )

• Asteroid Introduction
• APOD: 2000 December 15 - IC443's Neutron Star
• Kuiper Belt Objects

Pulkovo NEO Page . ... EPOS Software Package . ... EPOS ( E phemeris P rogram for O bjects of the S olar system) is the Windows PC application for study and ephemeris support of observations of the Solar system objects. ... It controls the part of common data and transfers the control to one of the programs that solve the restricted set of tasks. ... So with the EPOS software package one can calculate the accurate ephemerides for many objects and get the quick illustration of their motion as well. ...

Еще в разделе: (Показать все результаты (>323) - www.gao.spb.ru/ )

• Pulkovo NEO Page (In English)
• Pulkovo NEO Page: General Information

... Spacecraft . ... To space by cannon? Finally, the deep space explorers --spacecraft which break away from the Earth's gravity . ... The "Luna" series of the USSR conducted 7 soft landing of unmanned probes, two of them with wheeled robotic "Lunokhods," and two of those missions returned samples to Earth. Others spacecraft have visited the major planets of the Solar system. ... The Mariner series have explored Venus and Mars--and Mariner 10 even reached Mercury, for three separate encounters! ...

Еще в разделе: (Показать все результаты (>7614) - www.cosmos.ru/ )

• The Wind Spacecraft
• The Acceleration of the Aurora
• (S-7a) The Black Hole at the Center of our Galaxy

... Classes . ... Nebula Class Reference . ... getInfoString (const StelCore *core, const InfoStringGroup &flags) const . ... getCloseViewFov (const StelCore *core=NULL) const . ... getVMagnitude (const StelCore *core, bool withExtinction=false) const . ... getSelectPriority (const StelCore *core) const . ... getEquinoxEquatorialPos (const StelCore *core) const . ... getJ2000GalacticPos (const StelCore *core) const . ... getPositionInfoString (const StelCore *core, const InfoStringGroup &flags) const . ...

Еще в разделе: (Показать все результаты (>5526) - astro.uni-altai.ru/ )

• Stellarium: Supernova Class Reference
• Stellarium: Quasar Class Reference

Geotimes -- November 2005 -- Two more moons for "planet" Pluto http://www.geotimes.org/nov05/WebExtra110305.html Web Extra Thursday, November 3, 2005 Two more moons for Pluto When the New Horizons spacecraft finally reaches Pluto in July 2015, researchers will have more objects to study than previously thought. In addition to Pluto's confirmed moon Charon, astronomers have detected two more orbiting celestial bodies, which could help reveal how the planet and moon system formed. ...

Еще в разделе: (Показать все результаты (>21063) - www.stsci.edu/ )

• HST this week: 331
• Observing Faint Targets Near Bright Objects
• HST this week: 338

... Tonight's Sky . ... The Magazine . ... Observing . ... Magazine . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Sky Events . ... Observing springtime deep-sky objects with a large telescope . ... How close does Pluto's orbit come to Neptune? ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine...

Еще в разделе: (Показать все результаты (>6938) - www.astronomy.com/ )

• How close could you be to witness Arizona's meteor crater form and still live
• Asteroid Toutatis slowly tumbles by Earth | Astronomy.com
• Mars orbiter images rover and tracks in Gale Crater | Astronomy.com

... The Galactic low-mass X-ray binary GS 2023+338 was discovered during the burst on May 22, 1989 with the Japanise satellite Ginga (aka Galaxy). The flux reached 17 crabs (this unit of flux measurement is an bright X-ray source, Crab Nebula) at 10-35 keV. ... No other radio telescope worldwide carried out multi-frequency measurements. ... Upon 14 days the radio flux fell below the detection level at the RATAN-600 in relation to the decrease of the X-ray flux. ...

Еще в разделе: (Показать все результаты (>1361) - mavr.sao.ru/ )

• RCJ0311+0507
• Galaxy sector, archive 2004
• New Polar Ring Galaxies

... Asteroid . ... In case you didn't hear about it, which you probably didn't: On Jan. 7, an asteroid 1,000 feet across -- nearly three times the current diameter of Marlon Brando -- barely missed the Earth, which is most likely your planet of residence. ... What if this asteroid had hit the Earth? ... As it happens, the American Astronomical Society was holding a conference in Washington AT THE VERY SAME TIME as the asteroid nearly hit the Earth. ...

Еще в разделе: (Показать все результаты (>61) - www.winer.org/ )