US Navy – USN
- Spacecraft: Vanguard 1-3 | Parker Solar Probe
- Abbreviation: USN
- Country: USA
US Navy is a Government space agency that was established in 1963. US Navy has 3 successful launches and 15 failed attempts, with a cumulative tally of 18 launches, currently with 0 pending launches in the pipeline. US Navy has a tally of 0 attempted booster landings, of which 0 failed and 0 successful booster landings recorded.
The Navy was competed with the Army to put the first American satellite into orbit. Their first two Vanguard missions failed, with the second being a highly publicized failure, as it exploded on the launchpad. They went on to put 3 satellites into orbit but did not beat the Army to be the first. Their work in space continues today largely on military satellites.