582 Liquid Hydrogen Photos and Premium High Res Pictures - Getty Images
The space shuttle Discovery sits on launch pad 39-B next to a liquid... News Photo - Getty Images
A hydrogen vent line remains connected to the external tank of the Space shuttle Discovery, after scrubbing on launch pad 39A, at the Kennedy Space Center in Cape Canaveral, Florida November 5,
File:Liquid Hydrogen Tank at NASA's Kennedy Space Center.png - Wikimedia Commons