If you aspire to the distant, and even not especially, space, the formula E=MC2 will first of all get in your way. And all because it limits the possibilities of mankind. According to this contradictory and controversial (including the authorship) formula – bodies with mass cannot reach the speed of light, otherwise the energy must be infinite, and massless particles (there are such) can, but no more. So, at the speed of light you fly to the Moon (+/-300,000 km) one second, to the Sun (150,000,000 km) already more than 8 minutes. The Sun is our star, and there are up to 400,000,000,000,000,000,000 of them in our galaxy alone (not the largest). The diameter of our galaxy is over 100,000 light years. Imagine how many seconds that is. Even if we reach the speed of light for human flight (which is incredible and contradicts all the laws of physics), it will take us more than 4 years to fly to the nearest star system in the constellation of Centauri (and back the same amount of time). To say that we, even overcoming all the laws of physics, can fly around at least our galaxy (to our neighbor, the Andromeda Nebula, 2,520,000 light years away) is still impossible!
First, we need to realize no less ambitious and grandiose idea, very original, fateful for mankind, incredible, but in fact, it turns out, has a very simple solution. It is only necessary to give immortality to mankind. This incredible and seemingly unfeasible idea is solvable in one quite simple way. It is a very simple solution, even on a physiological level. It's grandly simple. All you have to do is perfect the method of uploading your consciousness. First, record yours, then download it into a cloned body. Cloning has already been invented. And storing and downloading information into tangible media. And what should we do, even if we can't get it directly into the brain, put it into a chip implanted in the brain. Something like this – implanting a chip in the brain – is already being done. It's much harder to overcome the speed of light.