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File:Artist's concept of collision at HD 172555.jpg

Original file (3,000 × 2,400 pixels, file size: 357 KB, MIME type: image/jpeg)

Summary

Description
English: This artist's concept shows a celestial body about the size of our moon slamming at great speed into a body the size of Mercury. NASA's Spitzer Space Telescope found evidence that a high-speed collision of this sort occurred a few thousand years ago around a young star, called HD 172555, still in the early stages of planet formation. The star is about 100 light-years from Earth.
العربية: تصور لفرضية الاصطدام العملاق التي يعتقد أنه شكّل القمر.
Français : 70 à 95 % de l'eau de la Terre daterait d'avant la formation de la Lune issue de l'impact de Théia sur la Terre. Cet impact aurait entraîné la volatilisation d'une partie de l'eau déjà formée mais la majorité serait restée condensée, ce qui impliquerait que seulement de 5 à 30 % de l'eau de la Terre provienne d'un apport extra-terrestre (comètes et météorites) ultérieur (source
Date
Source http://www.nasa.gov/multimedia/imagegallery/image_feature_1454.html
Author NASA/JPL-Caltech

Licensing

Public domain 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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Original upload log

The original description page was here. All following user names refer to en.wikipedia.
Upload date User Bytes Dimensions Comment
2009-08-26 15:17:12 Originalwana 365408 3000×2400 Higher res
2009-08-20 10:20:04 Cmlisse 28820 600×480 {{Information |Description = |Source = |Date = |Author = |Permission = |other_versions = }}

Captions

Artist's concept shows a celestial body about the size of our moon slamming at great speed into a body the size of Mercury

Items portrayed in this file

depicts

giant impact hypothesis

inception

26 August 2009

media type

image/jpeg

checksum

97b0f5e923eb9b05b0aa7193276714ea1e32b1cc

determination method or standard: SHA-1

data size

365,408 byte

height

2,400 pixel

width

3,000 pixel

File history

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Date/TimeThumbnailDimensionsUserComment
current21:30, 28 November 2009Thumbnail for version as of 21:30, 28 November 20093,000 × 2,400 (357 KB)CommonsHelper2 Bot {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Move to Commons}} {{Information |Description = {{en |This artist's concept shows a celestial body about the size of our moon slammi

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