Right now, journeys into space are really difficult to make.

OR

Right now, space explorationl is really difficult to achieve.

There are a lot of factors involved in space exploration, and having a large amount of money is crucial. In the near future, this mater of fact is going to change, thanks to the space industry. Until now, nobody  has been financing space expeditions except governments, but this is changing. The way to solve this is creating private companies that can make trips into space which will allow the competition between those companies. Thus, the technological cost of journeys into space will decrease and the trips are going to be cheaper. Scientists and the general public are going to be the most benefited, due to the fact that scientists will be able to explore the space more often and that is going to permit more discoveries in less time. Taxpaying is the key to this money reduction, due to the fact that governments and people around the world will pay for it.

viajes espaciales ≠ space travels

viajes espaciales = space exploration, trips into [outer[ space, journeys into space