Percentage of what?
Nasa Spent 14 Billion Dollors on Space travel.
This question is a question of opinion. But i think that the Money spent on space travel should be diverted to medical research.
2 cents
Shannon Lucid spent 188 days in space in 1996.
We travel by a space rocket!
space travel denefits me =)
This percentage was 3,4 % in 2014.
Space travel is done by means of rockets.
Yes, we do have technology to travel to space.
Well for starters we are actually able to get into space with a space shuttle...
That's a "should" question. The answer to such a question is always a matter of opinion, and different people will inevitably have different answers. This is my own individual answer: -- "Millions", no. Billions, yes. -- "Travel", no. Exploration, yes.
Reagan