 Spacelab Module LM1 in Columbia's payload bay, serving as the United States Microgravity Laboratory | |
| Mission type | Microgravity research |
|---|---|
| Operator | NASA |
| COSPAR ID | 1995-056A |
| SATCAT no. | 23688 |
| Mission duration | 15 days, 21 hours, 53 minutes, 16 seconds |
| Distance travelled | 10,600,000 kilometres (6,600,000 mi) |
| Orbits completed | 255 |
| Spacecraft properties | |
| Spacecraft | Space Shuttle Columbia |
| Payload mass | 15,250 kilograms (33,620 lb) |
| Crew | |
| Crew size | 7 |
| Members | |
| Start of mission | |
| Launch date | 20 October 1995, 13:53:00 UTC |
| Launch site | Kennedy, LC-39B |
| End of mission | |
| Landing date | 5 November 1995, 11:45:21 UTC |
| Landing site | Kennedy, SLF Runway 33 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Perigee altitude | 241 kilometres (150 mi) |
| Apogee altitude | 241 kilometres (150 mi) |
| Inclination | 39.0 degrees |
| Period | 89.7 min |
 Left to right - Seated: Sacco, Rominger, Lopez-Alegria; Standing: Coleman, Bowersox, Leslie, Thornton | |
STS-73 was a Space Shuttle program mission, during October–November 1995, on board the Space Shuttle Columbia. The mission was the second mission for the United States Microgravity Laboratory. The crew, who spent 16 days in space, were broken up into 2 teams, the red team and the blue team. The mission also included several Detailed Test Objectives or DTO's.