Datoteka:M57RingNebula.jpg
Izvor: Hrvatska internetska enciklopedija
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Sažetak
| Opis |
Image of M57/NGC 6720 (The Ring Nebula) from NASA's Spitzer Space Telescope. "Spitzer's infrared array camera detected this material expelled from the withering star. Previous images of the Ring Nebula taken by visible-light telescopes usually showed just the inner glowing loop of gas around the star. The outer regions are especially prominent in this new image because Spitzer sees the infrared light from hydrogen molecules. The molecules emit the infrared light that they have absorbed ultraviolet radiation from the star or have been heated by the wind from the star." |
| Datum | |
| Izvor | http://www.spitzer.caltech.edu/images/1403-ssc2005-07a1-Infrared-Ring-Nebula |
| Autor | NASA/JPL-Caltech/J. Hora (Harvard-Smithsonian CfA) |
| Dopuštenje (Naknadna uporaba ove datoteke) |
"NASA still images, audio files and video generally are not copyrighted. You may use NASA imagery, video and audio material for educational or informational purposes, including photo collections, textbooks, public exhibits and Internet Web pages. This general permission extends to personal Web pages." |
Licencija
it watches you
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) |  |
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| Datum/Vrijeme | Minijatura | Dimenzije | Suradnik | Komentar | |
|---|---|---|---|---|---|
| sadašnja | 06:46, 2. studenoga 2006. | | 2.104 × 1.726 (569 KB) | Blankfaze~commonswiki |
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