If Virgin Galactic flies to an altitude of more than 50 miles on Thursday, it would proclaim that it has reached the edge of space. But other groups use a different measuring stick.
By Christian Davenport, Washington Post: Business
Tue, 12/11/2018 - 3:33am
If Virgin Galactic flies to an altitude of more than 50 miles on Thursday, it would proclaim that it has reached the edge of space. But other groups use a different measuring stick.