... 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 . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2006 October 8 . CMBR Dipole: Speeding Through the Universe . Credit: DMR , COBE , NASA , Four-Year Sky Map . ... But these speeds are less than the speed that all of these objects together move relative to the cosmic microwave background radiation (CMBR). ... About APOD | ... NASA Web Site Statements, Warnings, and Disclaimers . ...

Astronomy Picture of the Day . ... 12.05.2008 . ... May 2008 . ... 2007 2008 . ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ... A service of: LHEA at NASA / GSFC . ... U. Based on Astronomy Picture Of the Day . Publications with keywords: M 81 - M 81 group . Publications with words: M 81 - M 81 group . ... Galaxy Wars: M81 versus M82 . Bright Spiral Galaxy M81 . M81 versus M82 . ... Bright Spiral Galaxy M81 from Hubble . ...

... Armagh Planetarium . ... Universe . ... Continue Reading.. ... 2 Comments After entering the Twittersphere in 2010 Armagh PlanetariumòÀÙs online presence has grown over the past few years encompassing the Astronotes blog and Facebook accounts. ... No Comments In July 2015 Belfast Met opened its doors to budding astronauts, pilots and app geniuses with a new series of STEM summer camps. ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

Star formation is often best manifested by bright H II regions.These are regions of hydrogen which have been ionized by ultraviolet photons which are emitted from massive stars (typically stars more than 20 times the mass of the Sun). ... A narrowband filter image centered on this wavelength will then readily reveal these H II regions and hence the current sites of star formation in a galaxy, The luminous blobs that can be seen here are all H II regions . ... NGC 3558 Visual . NGC 3558 Infrared . ...

... 2000 October 23 . Dwarf Elliptical Galaxy NGC 205 in the Local Group . ... It is part of a gathering of about 25 galaxies known as the Local Group . ... Pictured on the lower left is one of the many dwarf ellipticals : NGC 205 . ... The above image shows NGC 205 to be unusual for an elliptical galaxy in that it contains at least two dust clouds (at 1 and 4 o'clock - they are visible but hard to spot) and signs of recent star formation . ... About APOD | ...

... Millions and billions of stars were bound by gravity into groups that we call galaxies. And gravity even confines galaxies together in packs that we call galaxy clusters . ... It shows the Spiderweb Galaxy forming at the centre of a galaxy cluster. ... Like a construction site on Earth, galaxy clusters are dusty while they are forming. ... Using one of these special telescopes astronomers have managed to look at stars being born inside the Spiderweb galaxy cluster for the first time. ...

... Our recent observations with the Hubble Space Telescope (August 29, 2014) led to revealing a highly isolated dwarf spheroidal galaxy KKs 3 situated at a distance of 2.12 0.07 Mpc from the Milky Way. The dSph galaxy locates on the southern sky (RA=02 h 24 m 44.4 s , Dec.= ... Over the last decade, about 30 dSph galaxies have been discovered inside the Local Group through systematic search in the vicinity of M31 and more that a dozen dSphs were discovered in the nearby group around M81. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Bad Astro Store . ... Slacker Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Life Under the Moon . ... Seeing Jupiter's Moons . ... Time Zones and the Spherical Earth . A Companion to the Earth? ... December 19, 1999) . ... Big Moon, Little Moon . ... How Big is the Moon? ... 14, 2000) . ... 2008 Phil Plait. ... Subscribe to the Bad Astronomy Newsletter! Talk about Bad Astronomy on the BA Bulletin Board! ...

... Astrophysics Group . ... Galaxy Formation and Evolution . ... Gas heating and outflows driven by accreting supermassive black holes (quasar phase) may affect the evolution of star formation in their host galaxy. ... The starburst galaxy M82, which expels dust and metal enriched gas out of its disk . ... The interstellar medium (ISM) plays a central role in galaxy evolution, providing the fuel for star formation and also hosting the ?fossil record? of the galaxy formation history. ...

... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Moon . ... Supernova showered Earth with radioactive debris . ... Why do we see only one side of the Moon from Earth? Have humans explored the other side, and, if so, is it different from the nearside? ... The Moon orbits Earth once every 27.3 days and spins on its axis once every 27.3 days. This means that although the Moon is rotating, it always keeps one face toward us. ... Get instant access to subscriber content on Astronomy.com! ...

... Àñòåðîèä 2010 TK7 (Earth Trojan, Aten group) - 6 äåêàáðÿ 2013 ãîäà â 0.197 a.e. îò Çåìëè .. ... Ïðîñìîòð ïîëíîé âåðñèè : Àñòåðîèä 2010 TK7 (Earth Trojan, Aten group) - 6 äåêàáðÿ 2013 ãîäà â 0.197 a.e. îò Çåìëè .. ... Ýëåìåíòû îðáèòû àñòåðîèäà 2010 TK7: . ... Earth Trojan ? ... 6 äåêàáðÿ 2014 ãîäà îêîëîçåìíûé àñòåðîèä-òðîÿí (Earth Trojan) êëàññà Àòîí (Aten group) 2010 TK7 (? ~300 ì) ïðîëåòèò íà ìèíèìàëüíîì ðàññòîÿíèè îò Çåìëè - 0.197 à.å.. vBulletin v3.8.4, Copyright 2000-2016, Jelsoft Enterprises...

Text of these problems is available also in other languages : . ... What can one see in the Moon's sky more often - the Sun or the Earth? ... There are about of 250 millions of stars in the elliptical galaxy M32 (a satellite of Andromeda galaxy). ... The masses of Capella's components. ... You are proposed to estimate the masses of Capella's components, using our observational data. ... A galaxy's mass. ... Estimate the mass of FGC 1908 and compare it to the mass of our galaxy. ...

... HST . ... Hubble Heritage Project . ... Science Blog . ... Meetings/Workshops . ... 2016 Spring Symposium . ... HST Calibration Workshops | ... March 31 - April 1, 2009 . ... 2010 Hubble Fellows Symposium . ... 2010 HST Calibration Workshop . ... 2005 HST Calibration Workshop ( Proceedings ) . ... 2002 HST Calibration Workshop ( Proceedings ) . ... Hubble's Science Legacy: Future Optical-Ultraviolet Astronomy from Space Workshop . ... STScI/ST-ECF Workshop: Science with HST II (Proceedings only.) ...

... Special Reports Giant space cloud may be powered by black holes 17:57 23 April 2007 NewScientist.com news service David Shiga An enormous cloud of roiling plasma in space may be drawing its energy from black holes, new observations suggest. Such clouds might be sources for the mysterious particles that occasionally crash into Earth's atmosphere at ultra - high speed. ... But higher energy particles in the cloud may be able to escape, he says. ...

This home page belongs to small group of scientists working at . Sternberg Astronomical Institute which is a part of Moscow State University . ... Ýëåêòðîííàÿ áèáëèîòåêà íàó÷íî-òåõíè÷åñêîé è õóäîæåñòâåííîé ëèòåðàòóðû (äîñòóïíà òîëüêî èç ÃÀÈØ) . ... Local staff . Dr. Edward Kononovich (konon -at- sai.msu.ru), Associate Professor . ... Dr. Sergey Ayukov (asv -at- sai.msu.ru), Research Fellow, Webmaster of the group . ... Joint seminar of Solar Studies Structure Group and Solar Photometry Group . ...

... Main . ... Pulsar Emission Mechanisms . ... Distinguished Visitor . PPTA algorithm development . ... Flux variations of PPTA pulsars . Carolyn Raithel (Carleton College) . ... Pulsar Wind Nebluae . ... Nov 1, 2010 - Jan 31, 2011 . ... June 23 - Aug 9, 2010 . ... Dec 8 - 17, 2009 . ... Dec 13 - 23, 2006 . ... Dec 3, 2006 - Jan 5, 2007 . ... Aug 10 - Dec 7, 2006 . ... June 29, 2006 - June 15, 2007 . ... May 15 - June 26, 2006 . ... Dec 31, 2005 - Feb 1, 2006 . ... Group . ... Pulsar Groups . ...

... SAO RAN RATAN-600 EXCURSIONS 40 YEARS of R/T REFERENCES . ... GPS radio sources . ... Thursday, April 30, 10-00 . ... Friday, December 19, 10-30 . ... N. Bursov, V. Chaykin, A. Storozhenko "Preliminary results of RATAN-600 antenna measurements with the help of the geostationary Satellite Turksat 2A/3A". ... The basic results. ... Information-analytical system of estimating the parameters of radio sources in continuum with the RATAN-600 (the message for a conference, IPA St. Petersburg). ......

One of the most important questions in astronomy today is the source of the ionising photons that caused a predominantly neutral Early Universe to evolve into the ionised one we see today. ... Although the global star formation history of the early universe is strongly constrained by current observations, we actually know little about the nature of star formation at this time (as given by the specific star formation rate). ...

Title: A Dark-Matter Spike at the Galactic Center? Authors: Piero Ullio , HongSheng Zhao , Marc Kamionkowski . ... Title: The Galaxy Environment of Quasars in the Clowes-Campusano Large Quasar Group at z~1.3 . ... Title: The Galaxy Environment of a Quasar at z=1.226: A Possible Cluster Merger . ... 16 matches for the search pattern galaxy environment . The URL for this page is: http://xxx.itep.ru/find/astro-ph/1/galaxy+environment/0/1/0/past,all/0/0 www-admin@xxx.lanl.gov ...