Kármán line is the internationally accepted boundary of space. It is 100 km above the mean sea level. Also known as the von Karman line, it is named after Theodore von Kármán, a Hungarian American engineer and physicist who was the first to define the boundary between the Earths atmosphere and the outer space.
There are disagreements on whether billionaire Richard Branson passed the Kármán line. In the US, 80 km above the mean sea level is considered as the cutoff point and Bransons Virgin Galactic flight reached a height of 86 km. Bezos Blue Origin flight is expected to reach the height of 106 km.