3 ms·
Not at all. Although 1783 was the first hydrogen balloon. Depends how you define space travel I guess. 1930s people got to 20km high
by mavhc 7y ago
Not at all. Although 1783 was the first hydrogen balloon. Depends how you define space travel I guess. 1930s people got to 20km high
- Strom 7y ago20km seems awfully low. The Kármán line at 100km [1] is what most would use. Alternatively 80km is also used. -- [1] https://en.wikipedia.org/wiki/K%C3%A1rm%C3%A1n_line https://en.wikipedia.org/wiki/K%C3%A1rm%C3%A1n_line