When did Virgin Galactic's VSS Unity achieve its first suborbital space flight?
2016
2017
2018
2019
Answer
VSS Unity, one of Virgin Galactic's spacecraft, achieved its first suborbital space flight on December 13, 2018. The flight reached an altitude of 82.7 kilometers (51.4 miles) and marked a significant milestone for the company.
Virgin Galactic Knowledge Showdown: 20 Questions to Prove Your Worth