File:NGC 4414 (NASA-med).jpg
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DescriptionNGC 4414 (NASA-med).jpg |
English: In 1995, the majestic spiral galaxy NGC 4414 was imaged by the Hubble Space Telescope as part of the HST Key Project on the Extragalactic Distance Scale. An international team of astronomers, led by Dr. Wendy Freedman of the Observatories of the Carnegie Institution of Washington, observed this galaxy on 13 different occasions over the course of two months. Images were obtained with Hubble's Wide Field Planetary Camera 2 (WFPC2) through three different color filters. Based on their discovery and careful brightness measurements of variable stars in NGC 4414, the Key Project astronomers were able to make an accurate determination of the distance to the galaxy. The resulting distance to NGC 4414, 19.1 megaparsecs or about 60 million light-years, along with similarly determined distances to other nearby galaxies, contributes to astronomers' overall knowledge of the rate of expansion of the universe. In 1999, the Hubble Heritage Team revisited NGC 4414 and completed its portrait by observing the other half with the same filters as were used in 1995. The end result is a stunning full-color look at the entire dusty spiral galaxy. The new Hubble picture shows that the central regions of this galaxy, as is typical of most spirals, contain primarily older, yellow and red stars. The outer spiral arms are considerably bluer due to ongoing formation of young, blue stars, the brightest of which can be seen individually at the high resolution provided by the Hubble camera. The arms are also very rich in clouds of interstellar dust, seen as dark patches and streaks silhouetted against the starlight.
ID: GPN-2000-000933 Other ID: PR99-25 |
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http://nix.larc.nasa.gov/info;jsessionid=1sl2so6lc9mab?id=GPN-2000-000933&orgid=12 http://imgsrc.hubblesite.org/hu/db/images/hs-1999-25-a-full_tif.tif |
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Author |
The Hubble Heritage Team (AURA/STScI/NASA) NASA Headquarters - Greatest Images of NASA (NASA-HQ-GRIN) |
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Permission (Reusing this file) |
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 10:36, 10 December 2016 | 1,730 × 1,428 (1.71 MB) | PlanetUser (talk | contribs) | better quality from TIFF | |
09:38, 2 May 2015 | 1,730 × 1,428 (2.42 MB) | Jcpag2012 (talk | contribs) | Reverted to version as of 00:15, 23 September 2006 | ||
03:51, 23 March 2014 | 1,730 × 1,428 (2.42 MB) | 1992 FARHAAD (talk | contribs) | Reverted to version as of 00:15, 23 September 2006 | ||
12:01, 15 March 2014 | 2,908 × 2,400 (388 KB) | The Herald (talk | contribs) | Higher resolution | ||
00:15, 23 September 2006 | 1,730 × 1,428 (2.42 MB) | Tom (talk | contribs) | higher res | ||
18:31, 21 January 2006 | 1,024 × 768 (60 KB) | Red devil 666 (talk | contribs) | |||
21:45, 1 May 2005 | 727 × 600 (393 KB) | DannyZ~commonswiki (talk | contribs) | n 1995, the majestic spiral galaxy NGC 4414 was imaged by the Hubble Space Telescope as part of the HST Key Project on the Extragalactic Distance Scale. An international team of astronomers, led by Dr. Wendy Freedman of the Observatories of the Carnegie I |
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Bytes per compressed strip | 7,411,320 |
Data arrangement | chunky format |