... 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. ...

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 . ...

Note added 3 June 2003 to . ... Furthermore, (iii) its orbital plane gave the satellite at apogee a velocity tangential to the ecliptic, helping it stay in the plasma sheet, rather than cut across it. ... Figure #1 Point A in this drawing is perigee (just above Kourou), B is apogee , the solid line perpendicular to the Earth axis is a cut through the equatorial plane, and its continuation parallel to the ecliptic represents a cut through the plasma sheet (not to scale). ...

... Article text . ... Article should be formatted according to the present rules, using the styles containing in the attached file example.doc . ... For example, article name should be typed in string Here Is the Paper Title , using style "title paper", etc. ... Title part of article Paper Title (style Title Paper . ... It is necessary to use style text paper for the body of article. ... In the text of article there should be links to every Figure and Table: Fig. 1 and Tab. 1 accordingly. ...

. Album : Фотоальбом Сергея Аюкова :: Travels to distant places and countries :: 1997/08 Japan (Kyoto, Nara) :: 17/08 Kyoto streets. Maruyama park . Up . << Prev . Dreaming about things on display. After checking, they appeared to be not that tasty compared to how they look. Next >> . Created with the tool album generator from David's MarginalHacks on Wed Jun 5 20:38:34 2013 .

... 2014 January 29 . Jelly Donut Shaped Rock Appears on Mars . Image Credit: Mars Exploration Rover Mission , Cornell , JPL , NASA . Explanation: What if a rock that looked like a jelly donut suddenly appeared on Mars? ... Even so, the rock's unusual light tones surrounding a red interior created interest in its composition -- as well as causing it to be nicknamed Jelly Donut . ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ... A service of: ASD at NASA / GSFC . ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... Astronomy for Kids . ... Can you explain Mercury's retrograde motion? Do other planets appear to do this also? ... When astronomers talk about retrograde motion, generally they refer to the apparent motion outer planets make as Earth passes them while orbiting the Sun. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... Jelly Donut Shaped Rock Appears on Mars . ... Credit Copyright: Mars Exploration Rover Mission , Cornell , JPL , NASA Explanation: What if a rock that looked like a jelly donut suddenly appeared on Mars? ... The unexpectedly placed rock, pictured above , was imaged recently by Opportunity after not appearing in other images taken as recently as twelve Martian days ( sols ) before. ... Publications with keywords: Mars . Publications with words: Mars . ... Opportunity s Decade on Mars . ...

... 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. ...

Lunar Libration . Articles | ... Actually, a slight rocking motion, called libration,* makes about 59% of the Moon's surface visible from our planet Earth -- though only 50% at any one time. ... Add to that, the approximate 1.5 degree tilt of the Moon's equator to the ecliptic, and you have the inclination of the Moon's equator to the plane of its orbit around Earth at some 6.5 degrees (5 + 1.5 = 6.5). ... Re-published on Astronomy Net with permission of the author. ... www.astronomy.net . ...

... Archives . ... All models are wrong, but some are useful. ... One of the most frequently cited quotes appeared in an article, titled The End of Theory: The Data Deluge Makes the Scientific Method Obsolete which I liked it very much because it cited the updated maxim by Peter Norvig, Google?s research director, . ... The article addressed perspectives of the new Petabyte data analysis era, where the traditional modeling and testing are not likely feasible. ... Chandra Blog . ... SAMSI AstroStat Prog....

... We guess it's almost impossible to create the site nowadays where all space relative philatelic materials (postage stamps, stationary, postal marks etc.) would be registered and presented. ... We tried to make such a step in April 2005, placing at the site first images of postage stamps with portraits of astronauts (cosmonauts, spacionauts, taikonauts:). ... All illustrative material (or simply speaking, all scans of stamps) are grouped in four sections: Countries , Years , Astronauts and Flights . ...

... К вопросу возможной модификации двигателя Шкадова и ее перспективах для решения некоторых задач SETI . ... А.Л.Зайцев . ... КОНЕЦ СОЦИУМА И ПРОБЛЕМА SETI . Л.М.Гиндилис . ... ОБОСНОВАНИЕ METI . ... Борис Николаевич Пановкин о познаваемости мира и о возможности связи с внеземными цивилизациями (к 80-летию со дня рождения) . ... Alexander Zaitsev . ... КНИГА ОБ ЭВОЛЮЦИИ И ВНЕЗЕМНЫХ ЦИВИЛИЗАЦИЯХ (Рецензия на книгу А.Д.Панова Универсальная эволюция и проблема поиска внеземного разума (SETI) . ...

Physicists have been honored by having their picture on currency in many countries around the world. ... Marie and Pierre Curie (Marie: 1867-1934, Pierre: 1859-1906) appear on the French 500 franc note. ... The greatest physicist of this century, Einstein not only invented the theories of special relativity (behavior of rapidly moving object) and general relativity (theory of gravitation), but made fundamental contributions to the beginnings of quantum theory. ... For a bio, click here . ... 100 K) . ...

Астрономия и Космос Небесные тела Планеты и их спутники . Видимым парадом планет называется планетная конфигурация, когда пять ярких планет Солнечной системы (Меркурий, Венера, Марс, Юпитер и Сатурн) в своем движении по небосводу подходят друг к другу на близкое расстояние и становятся видны в одно время в небольшом секторе (10 - 40 градусов) неба. ... Из выше описанного видно, что парад планет можно наблюдать, либо вечером, либо утром. ... Не пропустите ОСЕННИЙ ПАРАД планет 2002 года! ...

... The GALFA Continuum Transit Survey group ( GALFACTS ; PI: A. R. Taylor) has conducted several test observations and will begin an all-sky full-Stokes continuum survey later this year with the new P-ALFA spectrometer. ... Sample Perseus images of GALFA H I 21cm-line and full-Stokes continuum emission are shown below along with maps of molecular (CO) gas, thermal dust, and ionized gas optical emission for comparison. ... The GALFA H I emission appears to envelop the molecular cloud gas traced by CO. ...

... Polyhedral divisors and SL2 -actions on ane T -varieties. ... Michigan Mathematical Journal, to appear. See also Prepublication de l'Institut Fourier, hal-00595725; arXiv:1105.4494v1, 26 pp. ... Journal of Algebra, to appear. See also arXiv:0912.1474v2, 12 pp. ... Finite-dimensional subalgebras in polynomial Lie algebras of rank one. ... Homogeneous toric varieties. ... Sbornik: Math. 201 (2010), no. ... Journal of Pure and Applied Algebra 213 (2009), no. ... Journal of Algebra 304 (2006), no. ...

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. ...

... Circumstellar disc of beta Pictoris: constraints on grain properties from polarization. To appear in the Astronomy & Astrophysics . abs , src , ps ] . ... Dust influx to Titan from Hyperion . ... abs ] . ... Characteristics of bulges and disks in interacting galaxies . ... Dust grains around Herbig Ae/Be stars: porous, cometary-like grains? ... To appear in the Astronomy & Astrophysics Supplement . ... Finally, Links may lead you to more options (e.g. via the LANL preprint system). ...

On-line Journal This page is the home of our on-line directory of publications. Included below is an index of all papers published in the Irish Astronomical Journal from 1950 to 1994 inclusive. We also have an index of papers which have appeared since 1994. Here you will also find the contents of the current, previous and all past issues of the Irish Astronomical Journal since 1995. ... Index - An index of papers from 1950-1994 . ... Current - Contents and examples from the current issue . ...