Best Travel Infos

dhaval_khamar asked:


We always talk about space travel and lots of films about outer space and all. But how much our science has achieved till now? With known methods how much time would we really take to reach to nearest star? What are known obstacles?

Ruby

Gerri R asked:


How can radio waves continue to travel for ever in outer space?
On earth the radio waves from your favorite radio or TV station will only go 100 miles or so at the very most, but NASA and Astronomers say that they will travel almost for ever, or at least Billions and Trillions of miles with out stopping.
How is that possible?

Ivan