To venture into out space, man first of all has to develop..........that come up on long space journeys ? No one knows for sure.

To venture into out space, man first of all has to develop an efficient means of travel. Despite the rockets and space shuttles that man has now that can travel at many kilometers per second, the speed is still very slow. It takes months just to reach Venus, our next door planetary neighbor. To go to planets further away it would take years. Interstellar travel is definitely out of the question now.

According to current science, there is a speed limit in the universe. This limit is the speed of light which is an astounding 300,000 kilometers per second. Even at this speed it still takes about eight minutes for light from the Sun to reach our planet. So at the snail-pace 10 kilometers per second of our rockets, it is obvious why our speed is grossly inadequate.

Even if we have the means of travel, we still have to know the place we are going to. We have to know the conditions and thus devise steps to handle any situation that may crop up. It is foolish just to go to, say, a planet and land there. The space travelers will surely perish if they do not know how to cope with the conditions of the planets.

Man is a creature evolved from the Earth. Earth is his home and his body is made specially for living here. Biologically then space travel presents man with a formidable challenge. At the present stage of our space travel, man is restricted to orbiting the Earth or landing on the moon. It is an established fact that the body undergoes biological changes outside the Earth. An example is that the bones lose their mass and man has to readjust to conditions on Earth when he returns. This is only one problem that has to be resolved. What about those that come up on long space journeys ? No one knows for sure.

Summary: To venture into outer space, an efficient means of travel ahs to be developed. Rockets and space shuttles are too slow. The speed limit in the universe is the speed of light. At this speed it still takes about eight minutes for light from the Sun to reach our planet. Even if we have the means of travel, we still have to know where we are going to. Space travelers will perish if they do not know how to cope with conditions of the place they visit. Man evolved on Earth. His body is made specially for living here. Biologically he is not suited for space travel.