It is looking more and more likely that this could be a problem for long-term space travel.

The problem with Einstein's paradox is that it doesn't fold in biology?specifically, space radiation and the biology of aging.

how much does it cost now for a mock space travel in the planetarium? That will b the future cost of space travel, Isnt it?

future space travel = Your bus and taxi fare here is how u get the same idea that i have. goto any nearest planetarium and see the show. at the end of it just say 2 questions. how was the space travel? HOw is the space ship?

There is a place in Virginia looking at space travel. Some of the financial backers own large travel agencies. There is big interest in this in the corporate world.

There's going to be space travel at some point.