Lêer:Ngc 2440.jpg

Page contents not supported in other languages.
in Wikipedia, die vrye ensiklopedie

Oorspronklike lêer ‎(644 × 644 piksels, lêergrootte: 39 KG, MIME-tipe: image/jpeg)

Hierdie lêer kom vanaf Wikimedia Commons en kan ook in ander projekte gebruik word. Die beskrywing op die lêer se inligtingsblad word hieronder weergegee.

Beskrywing NGC 2440 is another planetary nebula ejected by a dying star, but it has a much more chaotic structure than NGC 2346. The central star of NGC 2440 is one of the hottest known, with a surface temperature near 200000 degrees Celsius. The complex structure of the surrounding nebula suggests to some astronomers that there have been periodic oppositely directed outflows from the central star, somewhat similar to that in NGC 2346, but in the case of NGC 2440 these outflows have been episodic, and in different directions during each episode. The nebula is also rich in clouds of dust, some of which form long, dark streaks pointing away from the central star. In addition to the bright nebula, which glows because of fluorescence due to ultraviolet radiation from the hot star, NGC 2440 is surrounded by a much larger cloud of cooler gas which is invisible in ordinary light but can be detected with infrared telescopes. NGC 2440 lies about 4000 light-years from Earth in the direction of the constellation Puppis.
Datum
Bron http://hubblesite.org/newscenter/newsdesk/archive/releases/1999/35/image/e (direct link)
Outeur NASA and The Hubble Heritage Team (AURA/STScI)
Toestemming
(Hergebruik van die lêer)
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.

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

uitbeelding

Lêergeskiedenis

Klik op die datum/tyd om te sien hoe die lêer destyds gelyk het.

Datum/TydDuimnaelsketsDimensiesGebruikerOpmerking
huidig02:36, 16 Maart 2007Duimnaelskets vir weergawe vanaf 02:36, 16 Maart 2007644 × 644 (39 KG)ElembisHigher resolution.
19:59, 9 April 2005Duimnaelskets vir weergawe vanaf 19:59, 9 April 2005350 × 350 (15 KG)VlSimpson~commonswikiNGC 2440 -- Hubble Image

Die volgende bladsy gebruik dié lêer:

Globale lêergebruik

Die volgende ander wiki's gebruik hierdie lêer:

Metadata

Die lêer bevat aanvullende inligting wat moontlik deur 'n digitale kamera of skandeerder bygevoeg is.

As die lêer verander is, sal sekere inligting dalk nie meer ooreenkom met dié van die gewysigde lêer nie.

Ontsluit van "https://af.wikipedia.org/wiki/Lêer:Ngc_2440.jpg"