The HST Key Project to Measure the Hubble Constant . ... H from HST . G. A. Tammann, L. Labhardt, M. Federspiel, A. Sandage, A. Saha, F. D. Macchetto, and N. Panagia . The Hubble Deep Field Observations . R. E. Williams, B. S. Blacker, M. Dickinson, H. C. Ferguson, A. S. Fruchter, M. Giavalisco, R. L. Gilliland, R. A. Lucas, D. B. McElroy, L. D. Petro, and M. Postman . The Hubble Constant via the Leo-I Group . ... Cepheids in NGC 7331 . ... G. P. Di Benedetto . ...

... The search for distant objects which can be both galaxies and quasars is one of the most important problems of observational astrphysics, because it allows one to determine cosmological parameters connected with the time of appearence and evolution of stellar systems, large scale structure of the Universe. ... Radio galaxies are important objects to be studied because they are sources of infrared-optical-ultraviolet continuum, emission lines and continual radio emission. ...

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? ...

An Ancient Universe: How Astronomers Know the Vast Scale of Cosmic Time . THE ANCIENT UNIVERSE . c) The Age of Light from the Most Distant Galaxies: The "Time Machine" Effect . ... Thus we are actually seeing these galaxies not as they are today, but as they were billions of years ago. ... The Universe: An Overview | ... The Ancient Universe - The Age of the Expanding Universe - The Age of the Oldest Stars - The Age of Light From Distant Galaxies - The Age of the Chemical Elements | ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. May 13, 1996 . Hubble's Constant and The Expanding Universe (I) . ... Explanation: Our Universe is expanding. ... 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" . Tomorrow's picture: Hubble's Constant and The Expanding Universe (II) . ...

... Hubble's Constant And The Expanding Universe (I) . ... 13.05.1996 . ... Credit W. Freedman ( Carnegie Observatories ), HST Key Project Team, and NASA Explanation: Our Universe is expanding. ... The teams have recently announced conflicting measurements of the Hubble constant , a number which represents the expansion rate of the Universe. ... 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" . ...

... To derive the motion of a penny dropped inside an airliner moving at 600 miles/hr (about 1000 km/hr)--should we calculate it with respect to the interior of the airliner, or with respect to the ground? ... And if a similar penny is let go inside an orbiting spaceship--should its motion be calculated relative to the interior of the spaceship, or relative to the Earth outside? ... Each such choice is known as a frame of reference . Some possible frames are -- the interior of the airliner, . ...

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . Login . See many more Astronomy Listings by: Category or Alphabet . Maker of Distant Suns software. ... Listed Since October 18, 1998 . ... Web Site . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...

... Archaeo-Astronomy talk by Betty Jo Harper in Navan Sun 8 Nov . ... Professor Robinson is one of EuropeтАЩs leading figures in observational cosmology but as well as providing new insights into the cosmological evolution of distant and dusty galaxies, Professor Rowan-Robinson has been an effective communicator of modern science, writing many popular books for a wide audience. ... Monday, 19 October 2009 20:16 . International Year of Astronomy, Ireland National Node . ...

... About ATNF overview . ... Australia Telescope Steering Committee . ... Parkes radio telescope . ... A Search for Distant Satellites of Neptune . ... Previous surveys for distant satellites of Neptune have had relatively bright magnitude limits ( ) and would have missed satellites with magnitudes and colours similar to the 2 recently discovered Uranian satellites ( and ). ... This search is up to magnitudes deeper than the previous wide field search for distant satellites by the UK Schmidt Telescope....

Album : asv-album ::Travels to distant places and countries . ... 2004/08 Penza (Russia) . 2005/07 Penza (Russia) . ... 2008/07 Penza (Russia) . ... 2009/06 Rome (Italy) . ... 2009/08 Ryazan (Russia) . 2009/10 Penza (Russia) . ... 2010/08 Penza (Russia) . ... 2012/09 Penza (Russia) . ... 2013/02 Bordeaux (France) . ... 2013/07 St.Petersburg (Russia) . ... 2015/05 Muranovo, Moscow Region (Russia) . ... 2015/08 Sergiev Posad (Russia) . 2015/08 Tarkhany, Penza region (Russia) . ...

... Tonight's Sky . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... galaxies . ... space flight . exoplanets . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Why can the Hubble Space Telescope see distant galaxies but not exoplanets? ... D espite Hubble's marvelous ability to image distant galaxies, the telescope isn't able to image extrasolar planets. Get instant access to subscriber content on Astronomy.com! ...

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... Currently, there is very little information on comets which are active beyond the orbit of Jupiter. ... Previous observations conducted by our team with the SAO RAS 6-m telescope showed that some of these comets have extended tails dissimilar to the tails of comets forming at close heliocentric distances. ... We for the first time measured the linear polarization of scattered emission for the two distant comets C/2010 S1 (LINEAR) and C/2010 R1 (LINEAR) at heliocentric distances of 5.9-7.0 au. ...

... 2004) DRGs @ z>2 I. (van Dokkum 2003) DRGs @ z>2 II. ... 2007) GOODS JK selected "disc" galaxies JK>2.3 @ > 1 sigma ACS imaging 0.6nSer1.6 12 objects (4 @ z<2) 18.8<K<23.3 3°<i<75° Models for normal starforming discs composite stellar populations including the TPAGB phase of intermediatemass stars (Maraston 2005) exponentially declining SFRs with efolding times of 37Gyr solar metallicity zf=10 (LCDM cosmology) or fixed age (0.6 Gyr) dust attenuation for a disc geometry (Ferrara et al. ...

Title: A New Model of the Gravitational Lens 0957+561 and a Limit on the Hubble Constant . Authors: Norman A. Grogin , Ramesh Narayan (Harvard Univ.) ... Title: ROSAT/PSPC observation of the distant cluster CL0939+472 . ... Title: Interaction in the Bimodal Galaxy Cluster A3528 . ... Title: Cosmological Implications of Galaxy Cluster Evolution . ... Title: Galaxy Cluster Virial Masses and Omega . ... Matches 201 to 222 from a total of 222 matches for the search pattern galaxy cluster . ...

... Our Galaxy . ... Universe . ... One of the Hubble Space TelescopeтАЩs goals was to accurately observe Cepheids in the most distant galaxies known (we knew they were far away, the problem was saying just how far). ... This work is becoming ever more refined; in January this year astronomers revealed that they had identified the farthest galaxy yet seen in a Hubble image. ... Thanks to the Hubble Space TelescopeтАЩs superb observations we can say that the universe is 13.75 billion years old. ...

... One of the Case galaxies appeared to be a distant and bright AGN. This is CG 273 ( = 09 h 39 m 05 s .8, = +35 36'42", m CG =18 mag). Only one prominent emission line is seen in the wavelength range 3600 - 5500 ?. ... We identify it with the Mg II doublet 2798 ?, the corresponding redshift is 0.670. With the Hubble constant 75 km s -1 Mpc -1 and q 0 =0.5 its absolute blue magnitude M B = -25 mag, which places CG 273 to the class of quasars. ... 1/10/1998 ...

So how do we find objects on the other side of the Universe? ... The latest instruments enable us to scan large areas of sky. Using Cerro Tololo's Blanco 4m telescope and the Canada-France-Hawaii 3.5 metre telescope , we are able to scan a piece of sky larger than the size of the moon every 5 minutes to a faintness level which allows us to find Type Ia supernovae halfway across the Universe. Type Ia supernovae are very rare - but each image we take contains 50000 galaxies. ...