HOW FAR IS SPACE FROM EARTH SURFACE
OVERVIEW
Whenever you look in sky, you see Sun, Moon, Stars etc things that are very far from Earth. These are those things which we at least see, but there are uncountable things in Space which we cannot see because those thing are beyond of our vision.
Basically we can't
imagine the distance of those things and how
big space is? , where space end? Well these are tough question and No ones
knows the exact answer of these question. Space is infinity means we does not know the end of our space or may be we never know because if we want to find the end of the space then we want to travel in space at very high speed. We want a speed of light to travel in space, But our today technology is not advance at that level or we can say it is impossible. Because some scientist's say that it is not possible to travel with speed of light.
But as we all know Human curiosity make everything possible and for
that Human made Space organization, so that we find a correct answer for those
things. Today there is approximately 72 different government space organization in the world. These organizations
help us know more about space.
What is
Space?
Space is the boundless three
dimensional extents in which object and events have relatively position and
direction. In other words, Space is the zone above and around our planet where
there is no air to breathe or to scatter light.
Space is a vacuum where sound cannot carry because molecules are not
close enough to transmit sound. But we cannot say that space is empty. Gas, dust and other bits of matter
float in the space but maximum part of space is empty.
No one knows exactly, how big space is. Some Scientist says that Space
itself is expanding very rapidly. We measure long distance of space in “Light year”, representing the distance
of light travel in one year (roughly 5.8
trillion miles, or 9.3 trillion kilometers).
· Now the question is How far is Space from Earth surface? so let find out.
According to
NASA, space comes 81 km above from
Earth surface. Yes! You heard it right, 81 km above from Earth surface the
beautiful space begin, where zero gravity exist. So, May be in future when cars
also fly and go to space. That day it will take you 1 hour to reach space if
you travel at the speed of 81km/h.
Space Rocket take approximately 8 - 10 min to reach in space and place on an orbit.
I know "car can fly and also go to space" it seems to be impossible or Funny but no ones know what will
happen in Future. In 19th century no one believe that one day we reach in space but slowly slowly we understand space by sending many satellites, spaceship with human etc thing in space to solve many mystery.
Major Milestones
- The first artificial Earth Satellite , Sputnik-1 launched by Soviet Union (Russia) on October 4, 1957.
2.
- The first human, to go space, Yuri Gagarin, was launched again by the Soviet Union on April 12, 1961.
3.
- The first human who walked on the surface of Moon was Neil Armstrong launched by USA with 11 crew member. The first lunar landing on July 20, 1969.
4.
- Venera 7 is the first space craft to soft land on a planet (Venus) on Dec 15, 1971
- Columbia is the first reusable spacecraft to return from space on April 14, 1981.
- On Nov 2, 2002 William Shepherd, Yury Gidzenko and Sergey Krikalyov become first crew to live and work on ISS (International Space Station) for months together.
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