Fail:Infrared_Structure_of_Comet_Holmes.jpg
From Wikipedia, the free encyclopedia
![Fail:Infrared Structure of Comet Holmes.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Infrared_Structure_of_Comet_Holmes.jpg/750px-Infrared_Structure_of_Comet_Holmes.jpg)
Fail asli (3,000 × 2,400 piksel, saiz fail: 2.57 MB, jenis MIME: image/jpeg)
Fail ini dari Wikimedia Commons dan mungkin digunakan oleh projek lain. Penerangan pada laman penerangan failnya di sana ditunjukkan di bawah.
Ringkasan
KeteranganInfrared Structure of Comet Holmes.jpg |
English: NASA's Spitzer Space Telescope captured the picture on the left of comet Holmes in March 2008, five months after the comet suddenly erupted and brightened a millionfold overnight. The contrast of the picture has been enhanced on the right to show the anatomy of the comet.
Every six years, comet 17P/Holmes speeds away from Jupiter and heads inward toward the sun, traveling the same route typically without incident. However, twice in the last 116 years, in November 1892 and October 2007, comet Holmes mysteriously exploded as it approached the asteroid belt. Astronomers still do not know the cause of these eruptions. Spitzer's infrared picture at left reveals fine dust particles that make up the outer shell, or coma, of the comet. The nucleus of the comet is within the bright whitish spot in the center, while the yellow area shows solid particles that were blown from the comet in the explosion. The comet is headed away from the sun, which lies beyond the right-hand side of the picture. The contrast-enhanced picture on the right shows the comet's outer shell, and strange filaments, or streamers, of dust. The streamers and shell are a yet another mystery surrounding comet Holmes. Scientists had initially suspected that the streamers were small dust particles ejected from fragments of the nucleus, or from hyerpactive jets on the nucleus, during the October 2007 explosion. If so, both the streamers and the shell should have shifted their orientation as the comet followed its orbit around the sun. Radiation pressure from the sun should have swept the material back and away from it. But pictures of comet Holmes taken by Spitzer over time show the streamers and shell in the same configuration, and not pointing away from the sun. The observations have left astronomers stumped. The horizontal line seen in the contrast-enhanced picture is a trail of debris that travels along with the comet in its orbit. The Spitzer picture was taken with the spacecraft's multiband imaging photometer at an infrared wavelength of 24 microns. |
Tarikh | |
Sumber | http://www.spitzer.caltech.edu/images/2742-ssc2008-18a-Anatomy-of-a-Busted-Comet |
Pengarang | NASA/JPL-Caltech/W. Reach (SSC-Caltech) |
Image use policy: http://www.spitzer.caltech.edu/info/18-Image-Use-Policy
Perlesenan
Public domainPublic domainfalsefalse |
![]() |
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.) | ![]() |
![]() |
Warnings:
|
Captions
Items portrayed in this file
menggambarkan
10 Oktober 2008
media type Inggeris
image/jpeg
Sejarah fail
Klik pada tarikh/waktu untuk melihat rupa fail tersebut pada waktu itu.
Tarikh/Waktu | Gambar kenit | Ukuran | Pengguna | Komen | |
---|---|---|---|---|---|
semasa | 22:30, 13 Jun 2011 | ![]() | 3,000 × 2,400 (2.57 MB) | Spitzersteph |
Penggunaan fail
Laman berikut menggunakan fail ini:
Penggunaan fail sejagat
Fail ini digunakan oleh wiki-wiki lain yang berikut:
- Penggunaan di ar.wikipedia.org
- Penggunaan di beta.wikiversity.org
- Penggunaan di bn.wikipedia.org
- Penggunaan di cs.wikipedia.org
- Penggunaan di en.wikipedia.org
- Penggunaan di en.wikiversity.org
- Penggunaan di es.wikipedia.org
- Penggunaan di fa.wikipedia.org
- Penggunaan di fr.wikipedia.org
- Penggunaan di id.wikipedia.org
- Penggunaan di ko.wikipedia.org
- Penggunaan di ml.wikipedia.org
- Penggunaan di nn.wikipedia.org
- Penggunaan di pt.wikipedia.org
- Penggunaan di sv.wikipedia.org
- Penggunaan di tr.wikipedia.org
- Penggunaan di zh.wikipedia.org
Metadata
Fail ini mengandungi maklumat tambahan daripada kamera digital atau pengimbas yang digunakan untuk menghasilkannya. Jika fail ini telah diubah suai daripada rupa asalnya, beberapa butiran dalam maklumat ini mungkin sudah tidak relevan.
Lebar | 3,000 px |
---|---|
Tinggi | 2,400 px |
Skema pemampatan | LZW |
Komposisi piksel | RGB |
Haluan | Normal |
Bilangan komponen | 3 |
Leraian mengufuk | 300 dpi |
Leraian menegak | 300 dpi |
Penyusunan data | format besar |
Perisian digunakan | Adobe Photoshop CS4 Macintosh |
Tarikh dan waktu fail diubah | 09:44, 1 Oktober 2009 |
Ruang warna | Tidak tertentukur |