JOURNEY INTO THE UNIVERSE

There are several theories on the future journey into the universe. But none of them look to be sound. There are some planets rotating around some other stars, where life seems to be possible, due to similar conditions as on earth. But they are very far away, and at the present technology, journey to such planets is not a possibility. The distance of the nearest star is about 4.5 light years. A light year is the distance a light ray can travel in one year at the rate of 300,000 k. m. per second. The distance from one end to other end of our own galaxy (Milkyway) is about 100,000 light years. And there are numerous galaxies in the universe and the universe is still expanding. As such Journey to planets of other stars is a remote chance as on today.
It is also observed that some aliens from outer space are visiting our planet several times by flying saucers since a long time. But the same is not confirmed yet. If they are coming from outer space, one day or other, humans also may go to planets of other stars after developing technology. But it seems to be a remote chance as on now.
Accoding to some Indian saints, after death on this planet, soul takes light ray as vehicle and travels into the universe at will. In the ancient India, some saints (maharshis) used to leave thier bodies, and used to travel into the universe as they please and return to their bodies at a suitable time, duly preserving their bodies against decomposition by their power.
If that is true, some technology has to be developed, where the soul has to be seperated from body, duly preserving the body from decomposition for a long time giving scope for the soul for reentering the body, after travelling into the universe and collecting secrets of the universe. But such possibility is also seems to be a remote chance. If the soul takes light ray as vehicle and travels into the universe, what happens if it travels by the side of a black hole which is capable of obsorbing the light ray itself. Is the soul also gets imprisoned in the black hole?. Can the black be called as hell, as the movement of light as well as that of soul are restricted?
As an alternative, some technology should be developed by means of which souls of the dead may be appraoched to know the secrets of the universe upto their knowlwdge. It means simply finding a way of connecting this world with the spiritual world.
There are theories on time machines that can travel either into past or into future. Also some think of developing space ships, that can travel at tremendous speed duly utilising the gravitational pull of planets and stars and can reach other living worlds. But at present, it is only a fiction.