Human Space Travel is so expensive because it takes alot of money to build the spaceship and then you would have to test it which might cause it to crash.
That special gear that has been developed for human space travel was the space suits. The space suits kept human alive in the harsh environment of space, temperature extremes and vacuum.
To see if it was safe for a human to travel into safe. If the monkey made it, a human might survive space travel. If the ape died, then it was not safe for a human to go into space. The chimp lived, so human beings were sent into outer space.
By rockets
rocket
Russia.
Yuri Gagarin
humans need to travel to outer space to reduce the chances of human species being wiped out by a single disaster such as meteor
Yuri Gagarin was the first human to travel in outer space on April 12th, 1961
It was the Russian, Yuri Gagarin.
The most expensive space travel experience available to civilians is a trip to the International Space Station (ISS) through companies like SpaceX or Axiom Space. These trips can cost tens of millions of dollars per person for a stay of up to a few weeks aboard the ISS.
Currently, the farthest a human has traveled into space is about 400,000 kilometers. That is the distance from the Earth to the Moon.
A monkey is close to a human so it was to see how a human type system would react into space. Plus, if there had been an accident a monkey would have been lost and not a human. Monkeys can also be trained to do things that would be needed as well.