Evolution of Space Technology

The Universe is about 13.4 billion years in time and space. It is also multi-dimensional evolving from a billion points on the surface of Earth and protruding in every directing we can think of. It is very different viewed from within the gravitational and atmospheric peripheries 0f the Earth. Out of it is a strange different world. For that matter the dimensions of space besides being vast are perceived as harsh from the human point of view. We are humans belonging to the Earth and we are brought up clinging to parameters that exist on Earth. Our body is made up of bone, muscle and tissue capable of living and exalting to these environs. But beyond I wouldn’t say is harsh but are parameters your physical abilities are not able to cope up with eg say our body is used to a gravity of 9.8 g/cm2 whereas in empty space it could be almost zero and that would make you float. It would not root you to the ground. This affects our bones, muscles and blood flow and many other aspects.eg There is almost 18% oxygen in our atmosphere and very negligible on Mars. What would you breathe? You are forced to carry oxygen with you. Add to this the pressure on Earth and the presence of water and this makes life very difficult for humans out of the spheres of Earth.
This also makes our movement difficult with respect to the space ships you are flying. It require a tremendous amount of fuel to get out of the Earths atmosphere and requires a lot of heat shields to be removed and discarded as you criss-cross the outer layers of the stratosphere of Earth. Thus putting a space probe of the size of a car requires a delta rocket that can churn tremendous amount of energy and thrust to get out of the Earths atmosphere and to navigate in space.
Thus space-faring is a slow game to adjust to new environs and it also is very expensive requiring millions of dollars just to get to our nearest planets and their moons in the solar system. The vastness of it makes it more complicated on account of their distances counted in light years.
As it has happened first humans sent a bitch (named Lyka) to space before putting up Yuri Gagarin in Low Earth Orbit. With Apollo inspiration missions we could walk on our Moon just 2,85,000 kms away. But we learned a little bit about the outer space. With the International Space Station we are learning to smother the hardships of leaving in space. We have sent robotic missions to Mercury and Venus and Mars and fly-by missions like the Voyager and The New Horizons that are still flying to the outer echelons of the solar system.
It has taken us almost 60years to achieve this. But the humans are dreamers and sometimes we think very fast under challenging circumstances when Kennedy asked NASA to put up humans within a decade in the sixties. Since building a rocket to fly in space we may have achieved a lot but we have also spent a lot many years. To fly in leaps and bonds we need to make revolutionary technology leaps. But for the time being it looks like mining helium from the Moon, Capturing an asteroid and putting it up on a Moons orbit and milking its minerals and metals and or taking a human flight to Mars and landings on Jupiters Moon Enceladus or touching down on Saturns Moon Titan seem to be our nearest objectives.