Neutral Buoyancy Space Simulator
Historic astronaut training facility in Huntsville, Alabama. Built 1967. Added to the National Register in 1985, and a National Historic Landmark.




What it is
The Neutral Buoyancy Simulator was a neutral buoyancy pool located at NASA's George C. Marshall Space Flight Center (MSFC). The simulator was used from 1968 through its decommissioning in 1997. Marshall recognized the need for underwater simulations of extra-vehicular activities (EVAs) and developed three successively larger tanks for the purpose. The Neutral Buoyancy Simulator contributed significantly to the American crewed space program. Astronauts involved into Skylab, the Space Shuttle, Hubble Space Telescope, and the International Space Station missions trained in the facility. Until Johnson Space Center constructed the Weightless Environment Test Facility in the mid-1970s, MSFC had the only NASA-owned test facility that allowed engineers and astronauts to become familiar with the dynamics of body motion under weightless conditions.
Text from Wikipedia, CC BY-SA 4.0.
The record
| Property type | Structure |
| Address | George C. Marshall Space Flight Center, Huntsville, AL |
| County | Madison County |
| Listed | Oct 3, 1985 |
| Reference number | 85002807 |
| Built | 1967 |
| Type of place | neutral buoyancy pool |
| Contributing resources | 1 structures |
The nomination form, the document that argues why this place matters, is in the National Archives: Read the nomination ↗
Visiting
| Address | George C. Marshall Space Flight Center, Huntsville, AL |
| Coordinates | 34.65387, -86.67807 · Directions ↗ |
| Nearest national park unit | Russell Cave National Monument · 54 mi · on Park Atlas |
Explore
Map
Nearby in Madison County




Reference
Sources
Location, dates, type and contributing counts come from the National Park Service's National Register spatial data. Construction date, architect, style, photograph and encyclopedia link come from Wikidata and Wikimedia Commons, matched on reference number 85002807. Nothing here is transcribed by hand. The description under "What it is" is the opening of the Wikipedia article, CC BY-SA.