File:Hubble spots candidate for most distant known galaxy.jpg
原始文件 (1,578 × 1,520像素,文件大小:1.55 MB,MIME类型:image/jpeg)
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摘要
[编辑]描述Hubble spots candidate for most distant known galaxy.jpg |
English: In this image, astronomers use the NASA/ESA Hubble Space Telescope and a cosmic zoom lens to uncover the farthest known galaxy in the Universe.
The newly discovered galaxy, named MACS0647-JD, is very young and only a tiny fraction of the size of our Milky Way. The object is observed 420 million years after the Big Bang, when the Universe was 3 percent of its present age of 13.7 billion years. The inset at left shows a close-up of the young dwarf galaxy. This is the latest discovery from a large program that uses massive clusters of galaxies as natural zoom lenses to reveal distant galaxies in the early universe. Called the Cluster Lensing And Supernova survey with Hubble (CLASH), the program allows astronomers to use the gravity of massive galaxy clusters to magnify distant galaxies behind them, an effect called gravitational lensing. In this Hubble observation, astronomers used the massive galaxy cluster MACS J0647.7+7015 as the giant cosmic telescope. The bright yellow galaxies near the center of the image are cluster members. The cluster’s gravity boosted the light from the faraway galaxy, making its image appear approximately eight times brighter than it otherwise would. The gravitational lensing technique allowed astronomers to detect the galaxy more efficiently and with greater confidence. Without the cluster’s magnification powers, astronomers would not have seen this remote galaxy. This image is a composite taken with Hubble’s Wide Field Camera 3 and the Advanced Camera for Surveys. The observations were taken 5 October and 29 November 2011. |
日期 | (released) |
来源 | http://www.spacetelescope.org/images/heic1217a/ |
作者 | NASA, ESA, and M. Postman and D. Coe (Space Telescope Science Institute), and the CLASH team |
许可协议
[编辑]Public domainPublic domainfalsefalse |
This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use. The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at hubblesite.org or 2008 copyright statement at spacetelescope.org. For material created by the European Space Agency on the spacetelescope.org site since 2009, use the {{ESA-Hubble}} tag. |
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来源 | ESA/Hubble |
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提供者 | NASA, ESA, and M. Postman and D. Coe (Space Telescope Science Institute), and the CLASH team |
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数据生成日期时间 | 2012年11月15日 (四) 19:00 |
关键词 | MCS J0647.7+7015 |
联系信息 |
http://www.spacetelescope.org/ Karl-Schwarzschild-Strasse 2 Garching bei München, , D-85748 Germany |