We use anti-matter that can get up to 20% of the speed of light, build a ship that can support 3-5 people with shielding strong enough to take the beating.
Project Valkyrie - Wikipedia, the free encyclopedia
Yea but then we go fast to another planet where there too we are vulnerable to super volcano's, global warming, drought, nuclear attack, meteors, the elements.
Why are we interested in trading one prison for another? Don't get me wrong we should inhabit this planet and others for as long as we can but I think we should build a man made planet where a colony of humans can live indefinitely.
There are also technologies that we already have that can be further produced for interstellar travel.
Bussard ramjet - Wikipedia, the free encyclopedia
Interstellar travel - Wikipedia, the free encyclopedia
Simply traveling at .1c isn't gonna cut it to get to Proxima b. We're gonna have to factor in time for acceleration
and deceleration. Maybe accelerate at 1g to save energy on centrifugal force. If the ship could be turned around 180° before deceleration, it could also be done at -1g. So, we're talking 50 - 60 years with current technology, and that could just be barely long enough that a human could make it there within his/her lifetime, if they're healthy enough to live well into their 90's.
Or, a probe could be sent with said technology to gather data ahead of a human expedition. It could easily make the journey in ~44 or so years, just as long as we have something figured out for shielding from things like interstellar dust particles, which would have quite an explosive impact at 1860 mp/s!
Before any of that, we're gonna need a lot of materials. 3D printers will be the key to mining the asteroid belt for millennia worth of precious metals and vital building materials. We're gonna need 3D printers out there printing little mining robots that feed the printer more materials to make more robots.
My generation will see mankind set foot on Mars. It's my grandchildren's generation that will see commercial travel to the gas giants.