Wikipedia

File:HST SN 1987A 20th anniversary.jpg

HST_SN_1987A_20th_anniversary.jpg (655 × 512 pixel, dimensione del file: 206 KB, tipo MIME: image/jpeg)

Logo di Commons
Logo di Commons
 Questo file e la sua pagina di descrizione (discussione · modifica) si trovano su Wikimedia Commons (?)
Descrizione

Twenty years ago, astronomers witnessed one of the brightest stellar explosions in more than 400 years. The titanic supernova, called SN 1987A, blazed with the power of 100 million suns for several months following its discovery on Feb. 23, 1987. Observations of SN 1987A, made over the past 20 years by NASA’s Hubble Space Telescope and many other major ground- and space-based telescopes, have significantly changed astronomers' views of how massive stars end their lives. Astronomers credit Hubble's sharp vision with yielding important clues about the massive star's demise.

This Hubble telescope image shows the supernova’s triple-ring system, including the bright spots along the inner ring of gas surrounding the exploded star. A shock wave of material unleashed by the stellar blast is slamming into regions along the inner ring, heating them up, and causing them to glow. The ring, about a light-year across, was probably shed by the star about 20,000 years before it exploded.
Data Released: 22 febbraio 2007
Fonte http://hubblesite.org/newscenter/archive/releases/2007/10/image/a/ (direct link)
Autore NASA, ESA, P. Challis, and R. Kirshner (Harvard-Smithsonian Center for Astrophysics)
Licenza
(Riusare questo file)
Public domain
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.

Didascalie

Aggiungi una brevissima spiegazione di ciò che questo file rappresenta

Elementi ritratti in questo file

raffigura

tipo di file

image/jpeg

Cronologia del file

Fare clic su un gruppo data/ora per vedere il file come si presentava nel momento indicato.

Data/OraMiniaturaDimensioniUtenteCommento
attuale13:26, 7 dic 2009Miniatura della versione delle 13:26, 7 dic 2009655 × 512 (206 KB)TryphonOriginal size; higher resolutions are just artificially blown up.
10:07, 22 mar 2008Miniatura della versione delle 10:07, 22 mar 20082 456 × 1 925 (1,11 MB)TohmaHigher resolution
18:19, 14 apr 2007Miniatura della versione delle 18:19, 14 apr 2007655 × 512 (206 KB)Winiar{{Information |Description=Twenty years ago, astronomers witnessed one of the brightest stellar explosions in more than 400 years. The titanic supernova, called '''SN 1987A''', blazed with the power of 100 million suns for several months following its dis

Utilizzo globale del file

Anche i seguenti wiki usano questo file:

Visualizza l'utilizzo globale di questo file.

Metadati

Questo file contiene informazioni aggiuntive, probabilmente aggiunte dalla fotocamera o dallo scanner usati per crearlo o digitalizzarlo. Se il file è stato modificato, alcuni dettagli potrebbero non corrispondere alla realtà.

Estratto da "https://it.wikipedia.org/wiki/File:HST_SN_1987A_20th_anniversary.jpg"