We can get humans to Alpha Centauri by the end of the 21st century. Not that it will be easy. Alpha Centauri, our closest stellar neighbor, is a long way away. 4.37 light-years to be precise. To put this in perspective, the Voyager 1 spacecraft, which was launched in 1977 and is now the farthest man-made object from Earth, has been traveling for over 44 years and has only traveled about 0.002 light-years (or 18.8 billion kilometers).
Create energy one side and another side vacuum energy will be created, use them to propel spaceship
How should we start? What’s the first problem you would tackle?
We have to create a space where we can discuss these ideas without fear of jeopardizing our status or career