Image:HubbleTuningFork.jpg

From Wikipedia, the free encyclopedia

Image
File history
File links

Size of this preview: 728 × 600 pixels
Full resolution‎ (850 × 700 pixels, file size: 128 KB, MIME type: image/jpeg)

[edit] Summary

Description	Galaxies are very important fundamental building blocks of the Universe. Some are simple, while others are very complex in structure. As one of the first steps towards a coherent theory of galaxy evolution, the American astronomer Edwin Hubble, developed a classification scheme of galaxies in 1926. Although this scheme, also known as the Hubble tuning fork diagram, is now considered somewhat too simple, the basic ideas still hold...
Source	made by NASA, taken from http://hubblesite.org/newscenter/archive/releases/1999/34/image/o
Date	October 6, 1999
Author	None given
Permission (Reusing this image)	See below.

[edit] Licensing

This file is in the public domain because it was created by NASA and the European Space Agency. Hubble material is copyright-free. Material published by NASA may be freely used as in the public domain without restriction, although NASA requests credit and notification of further use. ESA requires that they be credited as the source of any of their material that is used. The material was created for NASA by STScI under Contract NAS5-26555 and for ESA by the Hubble European Space Agency Information Centre. [1] or [2].

This file is an exact duplicate of another file from the Wikimedia Commons. Unless it is currently protected from editing, this media file may qualify for speedy deletion if it satisfies these conditions.

File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Dimensions	User	Comment
current	14:51, 17 September 2007	850×700 (128 KB)	Cosmo0 (Talk \| contribs)	(From press-release text: Galaxies are very important fundamental building blocks of the Universe. Some are simple, while others are very complex in structure. As one of the first steps towards a coherent theory of galaxy evolution, the American astronomer)