Date range for this project?

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X-33 and X-34 seem to have petered out ca. 2001. When was the start of SLI?

One of the external links in the article is an SLI fact sheet from NASA. You could probably incorporate text from that into the article, e.g "In May 2001, 22 contracts were awarded" or "the Space Launch Initiative's first milestone review [was] in March 2002." (sdsds - talk) 04:07, 25 April 2010 (UTC)Reply

Are the rocket engine projects all part of the Next Generation Launch Technology Program

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There is no section or article on Next Generation Launch Technology Program to clarify. - Rod57 (talk) 19:58, 7 January 2018 (UTC)Reply