... 2014 December 13 . The Infrared Visible Andromeda . Image Credit: Subaru Telescope ( NAOJ ), Hubble Space Telescope . ... Explanation: This remarkable synthetic color composite image was assembled from archives of visible light and infrared astronomy image data. ... Andromeda's population of bright young blue stars lie along its sweeping spiral arms, with the telltale reddish glow of star forming regions traced in space- and ground-based visible light data . ... About APOD | ...

The Infrared Visible Andromeda . ... Credit Copyright: Robert Gendler Explanation: This remarkable synthetic color composite image was assembled from archives of visible light and infrared astronomy image data. ... Andromeda's population of bright young blue stars lie along its sweeping spiral arms, with the telltale reddish glow of star forming regions traced in space- and ground-based visible light data . ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ...

... This is a false color image of HR 4796A composed of visible and near-IR light (blue=STIS, green=1.71 micron, red=2.22 micron). It's red color is caused by dust grains that scatter light poorly in the visible and very efficiently in the near-IR. This images shows the debris disk around HD 61005, and a model of debris disk dust grains being blown by and interstellar wind. This work was a Goddard web feature (look there for a cool movie showing one of the models). ...

... December 29, 1997 . The Milky Way in Infrared . Credit: The COBE Project , DIRBE , NASA . ... Until the invention of the telescope , nobody really knew what the "Milky Way" was. About 300 years ago telescopes caused a startling revelation: the Milky Way was made of stars . Only 70 years ago, more powerful telescopes brought the further revelation that the Milky Way is only one galaxy among many. Now telescopes in space allow yet deeper understanding. ... About APOD > . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Stars . ... Space Flight . ... Monthly Sky Notes . ... NGC 6357's inner star forming region glows with the emission of ionized hydrogen gas. Image credit: ESO/VVV Survey/D. Minniti. ... Located around 8000 light years away in the constellation of Scorpius , NGC 6357 (sometimes called the Lobster Nebula ) is a typical stellar nursery, filled with vast clouds of gas and tendrils of dark dust. ... Subscribe to Astronotes . ...

I was wondering what conditions should be met to have the "darkest" sky .. ... Upon the above publication of the Southern Galactic hemisphere, TunГ Tezel started seeking opportunities to create the Northern counterpart image. ... So, the initial quest of having the darkest possible sky have delivered us these two all-sky images of the two galactic hemispheres as seen from Planet Earth. Zoomable and 'full-screenable' fisheye view of the "darkest sky" Southern Galactic Hemisphere image. ...

... Astronomy news . ... NASA's Spitzer Images Out-of-This-World Galaxy . ... It is spiral-shaped like our Milky Way, with long, spindly arms of stars. The "eye" at the center of the galaxy is actually a monstrous black hole surrounded by a ring of stars. In this color-coded infrared view from Spitzer, the area around the invisible black hole is blue and the ring of stars, white. ... The ring around the black hole is bursting with new star formation. ...

... Another option is to buy slides of astronomical objects at different wavelengths to show students why astronomers use different bands of the spectrum to bring out specific characteristics in celestial objects. ... He then uses the camera to scan the entire classroom, asking students to identify what they are seeing. ... Once students see light in action, they can investigate its properties - such as frequency, wavelength, and interference - with wave experiments. ...

... Phase light curves of binary model that consists of a primary component with mass M 1 and a secondary component with mass M 2 . ... The input parameters of the problem are the accretion rate onto the binary components ( ), the component mass ratio q = M 2 /M 1 , the orbital inclination to the line of sight , the eccentricity e, the rotation angle of the apsidal line relative to the observer , and the parameter c characterizing viscosity. ...

... Dongwon Kim , March 2014, on-going . ... Tammy Roderick , March 2011, on-going . Emma Kirby, *PhD completed August 2010* . ... Laura Dunn, *PhD completed December 2007* . ... David Nicholls, *PhD completed March 2014* . ... Antoine Bouchard, *PhD completed June 2006* . Emily McNeil, *PhD completed December 2010* . ... Eduard Westra, *PhD completed December 2007* . Sebastian Gurovich, *PhD completed August 2006* . Rami Rekola, *PhD completed December 2004* . ...

... The Pleiades star cluster, also known as the Seven Sisters and Messier 45, is a conspicuous object in the night sky with a prominent place in ancient mythology . ... The stars in the Pleiades are thought to have formed together around 100 million years ago, making them 1/50th the age of our sun, and they lie some 130 parsecs (425 light years ) away. ... Data for these stars are listed in a table below. ... Yes . ... WEBDA Pleiades cluster data . ... M45: The Pleiades Star Cluster (2007 November 18) ...

Venus in visible light (violet filter) 50k gif ; 25k jpg . ... image from Pioneer Venus 15k jpg ; 28k jpg ( caption ) . ... 7 pancake volcanoes, alpha region 227k gif ; 327k jpg . ... Lada Regio, 47 deg S, 25 Long, showing mountains and craters 121k gif ; 321k jpg . ... Gula Mons and Cunitz crater, flat image of gulacun.gif 250k gif ; 178k jpg . ... Crater Farm, Lavinia Region, small 107k gif ; 147k jpg . ... Central Ovida region, 1 deg s by 83 deg 191k gif ; 531k jpg . ... Pictures .. ... Venus .. ...

... Centaurus A : 15,000,000 light years away, in the constellation Centaurus, the closest AG to Earth . ... Astronomers think that the reason for the unusual shape of this galaxy is because hundreds of millions of years ago two galaxies, one dusty spiral and one bright ellipictal, collided causing a massive black hole in the middle and bright emmision of light. ... Andromeda galaxy: 2.8 million light years away, closest spiral galaxy to earth, farthest object one can see without a telescope. ...

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

... News . Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... The Helix in new colors . ... The European Southern Observatoryт??s (ESO) VISTA telescope, at the Paranal Observatory in Chile, has captured a striking new image of the Helix Nebula (NGC 7293). ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... Robert L. Stewart (Brigadier General, USA, Ret.) ... SPECIAL HONORS: Awarded Army Distinguished Service Medal , Defense Superior Service Medal , 2 Legion of Merit, 4 Distinguished Flying Crossed, a Bronze Star, a Meritorious Service Medal , 33 Air Medals, the Army Commendation Medal with Oak Leaf Cluster and V Device, 2 Purple Hearts, the National Defense Service Medal , the Armed Forces Expeditionary Recipient of NASA Space Flight Medal (1984 & 1985). ...

Galactic Wind Shells and High Redshift Radio Galaxies . ... M.Krause . Astronomy & Astrophysics, v.436, 845-851 . Very Light Jets II: Bipolar large scale simulations in King atmospheres [small version] . ... Simulations of Astrophysical Jets in Dense Environments . M.Krause, V.Gaibler & M.Camenzind . in: High Performance Computing in Science and Engeneering '05 eds.: E.Krause, W.J ger & M.Resch. ... M.Krause & M.Camenzind . ... Martin Krause & Paul Alexander . ... Martin Krause . ...

... 11 Yellow-Green (78% transmission): Contrasts well with the red and blue characteristics of surface features on Jupiter and Saturn. ... 82A Light Blue (73% transmission): Useful on the Moon, Mars, Jupiter, and Saturn, this subtle pale blue filter enhances areas of low contrast while avoiding significant reduction of overall image brightness. ... Meade Series 4000 Photo-Visual Color Filters may be ordered individually or in the following sets: . ... Meade Series 4000 Broadband Nebular Filters . ...

... Spectrosc., 90 , 574-579. [ abstract (in English; ASCII file); paper (in Russian; PS file)] . ... Astronomy Letters, 26 , N 10, 679-690. [ abstract (ASCII file); paper (PDF file)] . ... 2001) . ... 72 , N 5, 607-612. [ abstract (ASCII file); paper (PS file)] . ... Scattering and polarization properties of the non-spherical particles. in: Smith W.L., Timofeyev Y.M. (eds.) IRS 2000: Current Problems in Atmospheric Radiation, A.Deepak Publ. (in press) [ abstract (ASCII file); paper (PS file)] . ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . Armagh Observatory, 1st December 2015: This year s Geminid meteor display, the best of the annual meteor showers, will be visible from approximately the 7th to 17th December, peaking on the evening of the 14th. ... Unlike most meteor showers, however, which originate from dust grains ejected into space by comets, the Geminid meteors originate from an unusual near-Earth asteroid, namely (3200) Phaethon. ...