... 1 erg = 0.1 microjoules . 1 Jansky = 10**-26 watts per metre square per hertz . 1 Angstrom = 0.1 nanometres . ... 1 Astronomical unit = 1.4960 times 10**11 m . ... Mass of Sun = 1.989 times 10**30 kg . ... Mass of the Earth = 5.976 times 10**24 kg . Mass of Jupiter = 318 times mass of Earth . Solar constant = 1.37 kW per metre . c= 3 times 10**8 metres per second . ... Mass of Proton = 1836.1 times mass of electron . ... Stefan Boltzmann constant = 5.67 times 10**-8 W m**-2 K**-4 . ...

... Агабабаев В. СПбГУ . ... Алтайский М.В. ИКИ & ОИЯИ . ... Dark matter and generation of galactic magnetic fields . Борисевич Т.П. ГАО РАН . Варшалович Д,А. ФТИ им. А.Ф. Иоффе . Гладышев А.В. ОИЯИ . ... Jordan J.E. Max Planck Institut for nuclear physics (Heidelberg, Germany) . ... Каршенбойм С.Г. ГАО РАН & MPQ (Garching, Germany) . Problems in determination of the Planck constant and redefinition of the SI units in terms of fundamental constants . ... Степанов А.В. ГАО РАН . ...

... title=' fashion наручные мужские часы Pierre Lannier 243F033. Коллекция Elegance Basic - Pierre Lannier' border='0' align='left' width='120' style='margin-right: 20px;' hspace='7' vspace='5'/> Кварцевые часы. ... Коллекция: Barete . ... Светильник LSF-7700-01 легко выступит в качестве объекта современного искусства в интерьерах поп-арт, хай-тек или кантри. ... Мужские наручные швейцарские часы в коллекции Timewalker Montblanc - Montblanc - Montblanc . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Space Flight . ... A glorious cosmic butterffly imaged by the HST (Image credit: NASA/ESA) . This dramatic image looks like some vast cosmic eruption, and that impression is entirely correct. ... Designated NGC 6302 and often called the Butterfly Nebula, this is an example of a planetary nebula. ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

... Hubble's Constant And The Expanding Universe (II) . ... 14.05.1996 . ... American astronomer Edwin Hubble played a major role in this profound discovery, coining the "Hubble constant". ... Two groups of astronomers trying to measure this fundamental constant using the Hubble Space Telescope (HST) are continuing to report conflicting results. ... The value of Hubble's constant was recently the subject of a popular public debate titled "The Scale of the Universe 1996: The Value of Hubble's Constant" ....

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. May 14, 1996 . Hubble's Constant and The Expanding Universe (II) . ... American astronomer Edwin Hubble played a major role in this profound discovery, coining the "Hubble constant". ... The value of Hubble's constant was recently the subject of a popular public debate titled "The Scale of the Universe 1996: The Value of Hubble's Constant" . ...

... The Hough transform technique is applied to a series of images from the LASCO/C2 coronagraph in order to understand the temporal evolution of radial structures on the solar corona, the so-called ``polar plumes''. ... This technique has been applied successfully to study coronal plumes on coronal images obtained by different instruments aboard the SOHO satellite. ... a highly structured, time variable K-corona due to Thompson scattering of solar light by coronal electrons, . ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... des actualit–їs . ... Accueil Jupiter transform–їe par ses nuages . ... La th–їorie admise est que la Ceinture –їquatoriale sud de Jupiter dispara–?t lorsque des nuages blanch–?tres de haute altitude se forment au-dessus de celle-ci, bloquant la vue des nuages sombres. ... Ecoutez le podcast вАЬ Jupiter et Saturne, plan–Rtes g–їantes gazeuses вАЭ par Th–їr–Rse Encrenaz, astronome –Љ l'observatoire de Paris sur Ciel et Espace Radio . ...

Lessons learned from the Thirty Meter Telescope site testing Tony Travouillon Sebastian Els, Angel Otarola, Reed Riddle, Matthias Schoeck, Warren Skidmore TMT.XXX.PRE.05.0XX.DRF01 1 Introduction TMT and its Site testing. Important choice before going on site. ... Considerations during analysis of the data. TMT.XXX.PRE.05.0XX.DRF01 2 Some Background about the TMT Site Testing TMT is a 30m, segmented, RitcheyChretien telescope design. ... ASCA Cloud Cover Analysis So how do we do it in practice? ...

Mapa del sitio . Las ecuaciones de Newton describen y predicen la forma en que su mueve un objeto: pero se mueve, con respecto a qu ? Para deducir el movimiento de una moneda cayendo dentro de un avi n movi ndose a 1000 km./h, deber calcularse con respecto al interior del avi n o con respecto a la tierra?. no importa que se escoge?. ... Cada opci n se conoce como un marco de referencia . ... En que se diferencian las observaciones en los dos marcos: la cabina del avi n y la Tierra? ...

... Bad Astronomy . Misconceptions . ... The Nine Planets . ... This is true, and so I have updated this page with a tidal force calculation. ... That way we can see right away how strong the other planets are; a gravity of 10 means the planet pulls on the Earth 10 times as much as the Moon does. ... So, in units of Moon gravity and tides, below are the forces on the Earth from rest of the planets (the data for masses and distances are from the wonderful page The Nine Planets ). ... 2008 Phil Plait. ...

... Param?tres . ... Centre de Donn es sur les Satellites Naturels. Param tres et constantes . ... Satellites de Mars . Satellites de Jupiter . Satellites de Saturne . Satellites de Uranus . Satellites de Neptune . Satellite de Pluton . Masses de satellites . Dimensions de satellites . Param tres photom triques de satellites . Param tres de rotation et p les . El ments orbitaux moyens des satellites lointains de Jupiter, Saturne, Uranus et Neptune . ...

Educator's Guide to Eclipses . ... In a solar eclipse you observe the Sun (using only safe methods, of course). ... In a lunar eclipse you observe the Moon. ... Because of the geometry described below, you can only view a solar eclipse when the Sun is up, and the Moon is nowhere to be seen. ... Eclipses occur when the Sun, Earth and Moon line up. ... In a solar eclipse the Moon passes directly in front of the Sun. ... In a lunar eclipse the Moon moves into Earth's shadow. ...

Guest Editorial , May 2006 . Transforming SETI to METI . ... Those who propose, or oppose, sending Messages to Extra-Terrestrial Intelligence (METI) must contemplate the Hamlet-like question: "To send or not to send?" The science known as SETI deals with searching for messages from aliens. ... We therefore propose that, for solution to the various current METI problems, we consider transforming the familiar SETI search space to a METI search space. ... Where to search? ... When to search? ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... Bob Berman . ... Observing Podcasts . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Dave's Universe . Seasonal Observing . ... Bob Berman's Strange Universe . Bob Bermanт??s Strange Universe: The dimensionless constant . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... X. 2015 Kazan , Tatarstan, Russia English , c (/) , G (· / ) , A (/2) , H0 (//) 2 2 Some constants and formulae 299 792 458 6.674·10 1367 68 50-100 6.626·10 1.602·10 9.109·10 96 485 1.257·10 8.314 1.381·10 -23 -8 -6 -34 -19 -31 -11 Speed of light in vacuum, c (m/s) Constant of gravitation, G (N·m2/kg2) Solar constant , A (W/m2) mean value Hubble parameter, diapason of values H0 (km/s/Mpc) Plank constant , h (J·s) Charge of electron , e (C) Mass of ...

... Indiana Jones is a registered trademark of Lucasfilm Ltd. ... There's the intrigue of the megaliths of Stonehenge, the ancient pyramids of Egypt, the earthen figures of Britain and Peru, and the bloody rituals of the Maya. ... To make sense of these great structures and sophisticated concepts, archaeologists and astronomers have pooled their talents. ... People could use these alignments to synchronize their calendars or track the exact path of a celestial object. ... Maya glyphs of Venus. ...

UNIVERSAL COORDINATES TRANSFORMER . EPOCH1: . EQUATORIAL COORDINATES FOR EPOCH1 . ... rad . ... EPOCH2: . EQUATORIAL COORDINATES FOR EPOCH2: . ... ECLIPTIC COORDINATES FOR EPOCH1 . ... ECLIPTIC COORDINATES FOR EPOCH2 . ... GALACTIC COORDINATES . ... Type initial epoch (epoch1), final epoch (epoch2) and needed coodinates (equatorial a 1 , d 1 for epoch1, ecliptic l 1 , b 1 for epoch1 or galactic l,b) and press corresponding "SUBMIT" (if EPOCH2=EPOCH1, EPOCH2=EPOCH1+10). ...

CONTROL SYSTEM . The LV Energia autonomous control system based on the onboard computer system ensures a high accuracy of PL launching to a prescribed area and great capabilities to recover from contingency situations including a failure of one engine of LV. ... In other words, 500 contingency situations were transformed to contingency situations incorporated in the design. ... SEA LAUNCH . LAND LAUNCH | ... LAUNCHERS | ... Official WEB-site of S.P.Korolev RSC Energia . ...

Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 03 - 09.10.2011, Forecast on 10 - 17.10.2011, Carrington Rotation 2015 (22,71.09.2011) SOLAR SUNSPOT ACTIVITY OF THE SUN OF THE LAST PERIOD KEPT AT THE AVERAGE LEVEL, GRADUALLY DECREASING BY THE PERIOD END. ... NEXT WEEK THE LEVEL OF SUNSPOT ACTIVITY IS EXPECTED TO BE THE AVERAGE. ... FLARE ACTIVITY WAS ON AT LOW LEVEL 6-9 OCTOBER AND AT VERY LOW LEVEL IN OTHER DAYS. ...