Starhopper The Starhopper was one of the initial prototype space flight vehicles made by space x for flight and engine testings. It consisted of one raptor engine enshielded within an aluminum body casing. The Starhopper took three maiden flights and was finally retired after its final 150 meters hop on 27 August 2019. First Flight: - 5 April 2019: First hop of ~1 meter (3 feet) of 5 seconds Second Flight: - 25 July 2019: Second hop of 20 meters (66 feet) of 22 seconds Third Flight: - 27 August 2019: Third and final flight of 150 meters (490 feet) of 1 minute SN1 A prototype known as Mk3 was renamed SN1 (Serial Number 1). It was destroyed on 26 February 2020 during a pressure test when the tank ruptured near its thrust puck. SN2 After facing difficulties with the thrust puck, Space X focused on it and made SN2 as a scaled-down test tank to focus testing on the structural integrity of the thrust puck. SN2 successfully passed the pressure and cryogenic tests on 9 Marc