The idea of terraforming Mars is a fascinating idea so as space settlement. In our search of next habitable planet we may find one or we will be able to terraform one uninhabitable planet. It’s also possible we may find a planet already occupied by indigenous population. The question is will the encounter lead us ahead or end the era of humans, like encounter between any to civilization with different levels of advancement, knowledge and technological superiority.
We have discovered 4,000 planets so far in the galaxy, and we now know that on average every star in the galaxy has a planet of some kind. So I think it’s inevitable that we’re going to bump into one of these advanced civilizations and it will change world history.
Presently, with few exceptions, only highly trained and carefully selected astronauts go to space. Space settlement needs inexpensive, safe launch systems to deliver thousands, perhaps millions, of people to orbit. If this seems unrealistic, note that a hundred and fifty years ago nobody had ever flown in an airplane, but today nearly 500 million people fly each year.
With NASA scientists and entrepreneurs like Elon Musk and Bas Landorp looking to colonize Mars in the near future, the size and shape of humanity’s future in space is difficult to predict. Perhaps we will jointly decide on a path that takes us to the Moon, Mars, and beyond. Perhaps we will see our best efforts directed into near-Earth space.
Whatever the future may bring to us as surprise, to continue the growth and development of human civilization we must look into space travel and settlement. With Global warming, Climate Change, Hovering Asteroids and Spreading of incurable epidemic we may have to leave Earth in near future. Terraforming and Space Settlement will be our last hope for survival.