... Observing . ... Solar Observing . ... April 3 (SUN) - Solar Observing, Central Park , Manhattan . ... APRIL'S SKY . ... Lecture Series at the American Museum of Natural History The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the .. ... The€аAmateur Astronomers Association of New York€аwas organized in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. ...

Next: M.D. Smith, Research Astronomer Up: Research Previous: J.G. Doyle, Research Astronomer Contents . During the final stages in its life, a star is transformed in ways which remain poorly understood. ... Each transformation is a response to changes in chemical composition in the stellar interior as nuclear reactions convert one source of fuel into another. ... Consequently, the number of stars currently in these late stages of stellar evolution is comparatively small. ...

... June 9, 1999 . NGC 4414: A Telling Spiral . ... the Hubble Heritage Team ( AURA / STScI / NASA ) . Explanation: How far away is this galaxy? ... Spiral galaxy NGC 4414 contains many Cepheid variable stars that oscillate in a way that allows astronomers to estimate their distance. ... NGC 4414 shows many classic spiral galaxy features, including thick dust lanes , a central region rich in old red stars, and winding spiral arms glowing with young blue stars. ... About APOD > . ...

The Hubble law produces a homologous expansion, which does not alter the shapes of patterns in the Universe. Other law such as a constant velocity (v = G*D 0 ) or a quadratic law (v = I*D 2 ) lead to a distortion of patterns. The picture above shows the result of expanding a familiar object by a factor of two using the constant velocity D 0 on the left, the linear Hubble D 1 law in the middle, and the quadratic D 2 law on the right. Tutorial: Part 1 | ... last modified 25-Aug-1997 ...

The Sun is our nearest star and the source of energy for life on Earth. ... For centuries astronomers wondered whether they were clouds floating in the Sun's atmosphere, but we now know that they really are huge regions of magnetic field, about as intense as the field at the poles of an iron magnet. ... Such abrupt events were named solar flares , and what made them especially interesting was that occasionally, after a prominent flare, a magnetic storm would erupt on Earth. ...

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... Tonight's Sky . ... Observing . ... Astronomy for Kids . ... How fast is the universe expanding? Astronomers independently confirm a value for the Hubble constant, a number that reveals the universe's size, age, and eventual fate. ... The Hubble constant, named for astronomer Edwin Hubble, who first observed cosmic expansion in 1929, is one of the fundamental numbers cosmologists use in describing our universe. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

... ESO . ... However, new studies by two independent research teams, based on observations of exploding stars (supernovae) by ESO astronomers [1] with astronomical telescopes at the La Silla Observatory as well as those of their colleagues at other institutions, appear to show that the expansion of the Universe is accelerating . ... They will soon be forthcoming, especially from new and large telescopes like the ESO Very Large Telescope (VLT) , that has recently delivered its first, impressive results....

... Our Galaxy . Milky Way . ... Universe . ... Space Flight . ... Other galaxies are not moving away because they are recoiling in disgust from the Milky Way, but appear to be receding because the Universe is expanding. ... Observers in any galaxy will see every other galaxy as redshifted, so there is nothing special about the Milky Way. ... If the Universe is expanding today, that implies that in the past the galaxies would have been closer together and the Universe was much smaller than it is now. ...

Hubble Family Homes . ... New Albany . ... New Albany High School . ... During the summer Edwin translated Spanish documents for an import company, and that fall he was hired to teach Spanish, physics, and mathematics, and to coach basketball, at New Albany High School. ... Gale E. Christianson has written an authoritative biography -- Edwin Hubble, Mariner of the Nebulae (Farrar, Straus, and Giroux, New York, 1995) -- that documents Hubble's career and describes the year he spent in Louisville. ...

S P E C I A L R E P OR T F F 62 ROM SLOWDOWN to SPEEDUP By Adam G. Riess and Michael S. Turner Distant supernovae are revealing the crucial time when the expansion of the universe changed from deceler ating to acceler ating tion. ... Gravity keeps us grounded. ... Although Einstein's general theory of relativity allows for gravity to push as well as pull, most physicists regarded this as a purely theoretical possibility, irrelevant to the universe today. ...

... People . Posts tagged ?Hubble constant? ... Posted by hlee . My first impression from the 212th AAS meeting is that it?s planned for preparing IYA 2009 and many talks are about current and future project reviews and strategies to reach public (People kept saying to me that winter meetings are more grand with expanded topics). ... Comment . ... ArXiv] 2nd week, Apr. ... 3 Comments . ... Dubbing the week of Dec. 2nd as the first week is hoped to be accepted. ... ArXiv] 1st week, Dec. ...