Who invented vacuum? How space shuttle reentry to earth takes place

If you mean vacuum cleaner, this was done by a janitor sticking a fan onto a pillowcase.

If you mean space vacuum, this wasn't invented. but instead the pressure of air simply decreases as you move away from the surface of the earth, the Karman line (62 miles from surface of the earth) is widely regarded as the boundary of space, even though pressure decreases rapidly from this point space never reaches an exact vacuum as it has a few atoms of hydrogen per cubic centimeter.

Space shuttle drops out of its orbit around the earth using thrusters and enters the atmosphere at the correct angle in order to gently slow down using the increasing atmospheric pressure, to little an angle, the shuttle skims off like a stone on a pond, too much and it heats up too quickly and will break up

hope this helps

It was "invented" by Otto von Guericke in 1663. Although vacuum has always existed in space, he was the first guy to create and demonstrate a vacuum on Earth. It was pretty cool actually, he had two big metal hemispheres made, put them in contact and evacuated the air inside the resulting metal sphere held together only by vacuum pressure... and teams of horses couldn't pull the hemispheres apart. It was a really big deal at the time, an emperor was there watching.

http://inventors.about.com/library/inven…

Re-enty, meh:

http://en.wikipedia.org/wiki/Re-entry

No one invented vacuum, it has existed in most of the universe since the beginning of time.