... Credit: International Astronomical Union Explanation: How many planets are in the Solar System? This popular question now has a new formal answer according the International Astronomical Union (IAU): eight. Last week, the IAU voted on a new definition for planet and Pluto did not make the cut. Rather, Pluto was re-classified as a dwarf planet and is considered as a prototype for a new category of trans-Neptunian objects . ...

Order my book on Peer Instruction for Astronomy ! ... The book includes hundreds of ConcepTests, and was distributed FREE to most intro astro instructors across the country. ... By encouraging student participation and interaction during the lecture, Peer Instruction encourages students to critically think through the arguments being developed, and to discuss their ideas and insights with their neighbors. ... Student satisfaction with the courses have been high. ... Back to Paul Green's HomePage . ...

Next: Search and Retrieval of the AXAF Data Archive on the Web using Java . ... ESA Villafranca . ... The International Ultraviolet Explorer (IUE) mission has produced a large collection of spectroscopic data containing about 104,000 spectra of ca. 9,600 different objects. ... This contribution describes the IUEFA project at Villafranca, and the plans to make the archive available to the scientific community under through the INES (IUE New Extracted Spectra) project. ... Data set . ... 2D spectra . ...

... Magnetic storms online . ... Geomagnetic activity forecast . ... December : 2015 . ... No magnetic storm is expected . From 2 December 2015 to 28 December 2015 the following magnetic storms and disturbances are expected: . December 06, 2015 geomagnetic disturbances . ... December 08, 2015 geomagnetic storm of level G1 (minor) . ... December 21, 2015 geomagnetic storm of level G2 (moderate) . ... December 16, 2015 geomagnetic storm of level G1 (minor) 2 December 2015 - 28 December 2015 . ...

General Information . ... Local Information . ... The city represents great cultural value because in the late 19th and early 20th centuries, Kislovodsk as a fashionable spa attracted many musicians, artists, and members of the Russian aristocracy. ... Double room with full pension (breakfast, lunch, dinner) - 2620 rubles per person per night. solnechniy . ... Citizens of most countries need visa to enter the Russian Federation. ... Victor Kornilov, Sternberg Astronomical Institute (chair) . ...

... Bad Astronomy . ... I think I will break from my usual format of Bad Astronomy/ Good Astronomy by saying that the way we define seasons currently is not strictly bad, but I feel (in my opinion!) that it could be better. The definition of when the seasons begin is at the moment of solstice or equinox; that is, winter (in the north) starts on December 22 nd and summer starts on June 22 nd . ... Now imagine breaking up the Sun's 46 degree up-and-down yearly swing into 1 day intervals. ...

... Most Important Journals . Less Popular Astronomical Journals . Physics . Space, Selectial mechanics, .. Russian Journals . ... Astrophysics & Astronomy . ... Astronomical Journal . ... New Astronomy . ... Publications of the Astronomical Society of the Pacific . ... STScI News . Space Telescope Insitute Newsletter . ... Journal of Astronomical Data . ... Journal of High-Energy Physics (mirror in CERN ) [astro, grav, hi-energy .. ... Journal of Experimental and Theoretical Physics . ...

Piloted complex Mir has been functioning in orbit more than 12 years. ... We propose to consider piloted complex Mir as an international one and to call the states of the space association for share financing and its joint exploitation according to the international treaty. ... The Russian side is ready for the constructive negotiations on setting up the International space station on the basis of share participating of the countries (owners) in the exploitation of the complex Mir. ...

... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... ESO . ... Survey Telescopes . ... Star Clusters . ... ESOcast . ... Stars@ESO . ... ESO Science Newsletter . ... ESO 3.6-metre telescope . ... TRAnsiting Planets and PlanetesImals Small Telescope . ... Now members of the public have a unique opportunity to go behind the scenes and follow astronomers on a planet hunt as it happens. ... ESOcast 80: Follow a Live Planet Hunt . ...

International Q-Days and D-Days ---------------------------------------------------------------------------- Classification of Days (deduced from Kp indices) The selection of the quietest days (Q-days) and most disturbed days (D-days) of each month is deduced from the Kp indices on the basis of three criteria for each day: 1. ... In order to indicate such a situation, selected days which do not satisfy certain absolute criteria are marked as follows. ...

NAUTICAL ASTRONOMICAL YEARBOOK for 2010 (in Russian) . Foreword . ... The EPM2004 domestic numerical theory of movement of the Sun, the Moon, and major planets is used in т??Nautical Astronomical Yearbookт?? In NAY the positions of stars are published in the system of stellar catalogues FK6 and HIPPARCOS. ... conditions of visibility of the planets, apparent places of stars, star charts, tables of azimuths of Polaris ? ... Examples for NAY 2010 are calculated by M.V.Lukashova, M.L.Sveshnikov. ...

. Pulkovo Observatory of Russian Academy of Sciences is situated . near Saint-Petersburg. It was founded in 1839. 196140, Saint-Petersburg, Pulkovskoye chaussee 65/1 . English version . Russian version . This page has been accessed times since May 1, 1999.