Fișier:Hubble captures Comet ISON.jpg

Conținutul paginii nu este suportat în alte limbi.
De la Wikipedia, enciclopedia liberă

Mărește rezoluția imaginii(1.470 × 1.470 pixeli, mărime fișier: 352 KB, tip MIME: image/jpeg)

Acest fișier se află la Wikimedia Commons. Consultați pagina sa descriptivă acolo.

Descriere fișier

Descriere
English: This NASA/ESA Hubble Space Telescope image of Comet (C/2012 S1) ISON was photographed on 10 April, when the comet was just within Jupiter’s orbit, at a distance of 386 million miles from the Sun (394 million miles from Earth).

Even at that great distance the comet is already active as sunlight warms the surface and causes frozen volatiles to sublimate. Preliminary measurements from the Hubble images suggest that the nucleus of ISON is no larger than three or four miles across – remarkably small considering the high level of activity that researchers have observed in the comet so far. Astronomers are using these images to measure the activity level of this comet and constrain the size of the nucleus, in order to predict the comet’s activity when it skims 700 000 miles above the sun’s roiling surface on 28 November 2013.

The comet’s dusty coma is approximately 3 100 miles across, or 1.2 times the width of Australia. A dust tail extends more than 57 000 miles, far beyond Hubble’s field of view.

ISON stands for International Scientific Optical Network, a group of observatories in ten countries who have organised to detect, monitor, and track objects in space. ISON is managed by the Keldysh Institute of Applied Mathematics, part of the Russian Academy of Sciences.
Dată
Sursă http://www.spacetelescope.org/images/opo1314a/
Autor NASA, ESA, J.-Y. Li (Planetary Science Institute), and the Hubble Comet ISON Imaging Science Team

Licențiere

w:ro:Creative Commons
atribuind
atribuind
ESA/Hubble images, videos and web texts are released by the ESA under the Creative Commons Attribution 4.0 International license and may on a non-exclusive basis be reproduced without fee provided they are clearly and visibly credited. Detailed conditions are below; see the ESA copyright statement for full information. For images created by NASA or on the hubblesite.org website, or for ESA/Hubble images on the esahubble.org site before 2009, use the {{PD-Hubble}} tag.
Conditions:
  • The full image or footage credit must be presented in a clear and readable manner to all users, with the wording unaltered (for example: "ESA/Hubble"). Web texts should be credited to ESA/Hubble (except when used by media). The credit should not be hidden or disassociated from the image footage. Links should be active if the credit is online. See the usage rights Q&A section on the ESA copyright page for guidance.
  • ESA/Hubble materials may not be used to state or imply the endorsement by ESA/Hubble or any ESA/Hubble employee of a commercial product or service.
  • ESA/Hubble requests a copy of the product sent to them to be indexed in their archive.
  • If an image shows an identifiable person, using that image for commercial purposes may infringe that person's right of privacy, and separate permission should be obtained from the individual.
  • If images or visuals are changed significantly from the original work (apart from resizing, cropping), we suggest that the changes are mentioned after the credit line. For example "Original image by ESA/Hubble (M. Kornmesser), warping and recolouring by NN".

Notes:

  • Note that this general permission does not extend to the use of ESA/Hubble's logo, which shall remain protected and may not be used or reproduced without prior and individual written consent of ESA/Hubble.
  • Also note that music, scientific papers and code on the esahubble.org site are not released under this license and can not be used for non-ESA/Hubble products.
  • By reproducing ESA/Hubble material, in part or in full, the user acknowledges the terms on which such use is permitted.
w:ro:Creative Commons
atribuind
Acest fișier a fost eliberat sub licența Creative Commons Atribuire 4.0 Internațională.
Atribuire: ESA/Hubble
Sunteți liber:
  • să partajați cu alții – aveți dreptul de a copia, distribui și transmite opera
  • să adaptați – aveți dreptul de a adapta opera
În următoarele condiții:
  • atribuind – Trebuie să atribuiți opera corespunzător, introducând o legătură către licență și indicând dacă ați făcut schimbări. Puteți face asta prin orice metodă rezonabilă, dar nu într-un fel care ar sugera faptul că persoana ce a licențiat conținutul v-ar susține sau ar aproba folosirea de către dumneavoastră a operei sale.

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

subiectul reprezentat

10 aprilie 2013

Istoricul fișierului

Apăsați pe Data și ora pentru a vedea versiunea trimisă atunci.

Data și oraMiniaturăDimensiuniUtilizatorComentariu
actuală30 aprilie 2013 12:59Miniatură pentru versiunea din 30 aprilie 2013 12:591.470x1.470 (352 KB)JmencisomUser created page with UploadWizard

Următoarele pagini conțin această imagine:

Utilizarea globală a fișierului

Următoarele alte proiecte wiki folosesc acest fișier:

Informații