File:Sig06-006.jpg
原始檔案 (2,400 × 2,700 像素,檔案大小:4.39 MB,MIME 類型:image/jpeg)
說明
摘要
[編輯]Like great friends, galaxies stick together. Astronomers using NASA's Spitzer Space Telescope have spotted a handful of great galactic pals bonding back when the universe was a mere 4.6 billion years old. The universe is believed to be 13.7 billion years old.
Collectively, these great galactic buddies are called galaxy clusters. A typical galaxy cluster can contain hundreds of galaxies and trillions of stars.
In this false-color composite, some of the oldest galaxy clusters in the universe pose for Spitzer's Infrared Array Camera. The individual galaxies that make up the distant clusters are shown as red dots in all four images.
The green blobs are Milky Way stars along the line of sight, and the blue specks are faint galaxies at various distances along the line of sight. The green and blue data are from a visible-light, ground-based telescope.
The cluster at 9.1 billion light-years away (lower right panel) is currently the most distant galaxy cluster ever detected.
These images are three-color composites, in which blue represents visible light with a wavelength of 0.4 microns, and green indicates visible light of 0.8 microns. The visible data were captured by the ground-based Mosaic-1 camera at the Kitt Peak National Observatory in Tucson, Ariz. Red represents infrared light of 4.5 microns, captured by Spitzer's infrared array camera.
File info
[編輯]描述Sig06-006.jpg | Great Galactic Buddies |
日期 | January 10 - 14, 2004 |
來源 | http://gallery.spitzer.caltech.edu/Imagegallery/image.php?image_name=sig06-006 |
作者 | NASA/JPL-Caltech/S.A. Stanford (UC Davis/LLNL) |
授權許可 (重用此檔案) |
http://www.spitzer.caltech.edu/Media/mediaimages/copyright.shtml |
Individual images
[編輯]see http://gallery.spitzer.caltech.edu/Imagegallery/image.php?image_name=sig06-006 High quality tif files also avaliable.
授權條款
[編輯]Public domainPublic domainfalsefalse |
本作品由NASA創作,屬於公有領域。根據NASA的版權政策:“NASA的創作除非另有聲明否則不受版權保護。”(參見:Template:PD-USGov/zh,NASA版權政策或JPL圖像使用政策) | ||
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日期/時間 | 縮圖 | 尺寸 | 用戶 | 備註 | |
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目前 | 2007年7月11日 (三) 18:58 | 2,400 × 2,700(4.39 MB) | Anzibanonzi(對話 | 貢獻) | ==Summary== Like great friends, galaxies stick together. Astronomers using NASA's Spitzer Space Telescope have spotted a handful of great galactic pals bonding back when the universe was a mere 4.6 billion years old. The universe is believed to be 13.7 bi |
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影像標題 | 4.44 x 4.44 arcmin, N is up |
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寬度 | 2,400 px |
高度 | 2,700 px |
壓縮方式 | LZW |
像素合成 | RGB |
方位 | 標準 |
像素數量 | 3 |
水平解析度 | 300 dpi |
垂直解析度 | 300 dpi |
資料排列 | 矮胖格式 |
使用軟體 | Adobe Photoshop CS2 Macintosh |
檔案修改日期時間 | 2006年3月20日 (一) 18:43 |
色彩空間 | 顏色未校準 |