now my question: is FL1200 space? and if yes, did it really went into space and returned back into our atmosphere like the space shuttle does nowadays?
Where does space begin?
There is no clear boundary because the atmosphere gradually thins the higher you go.
The lowest artificial satellites can orbit at about 160km (100 miles) above the Earth - but even at this height traces of the atmosphere we breathe are enough to slow them down.
Other orbits:
Space shuttle - 300 km (185 miles)
International Space Station 350 km (220 miles)
Passenger aircraft - 9 km (6 miles)
As the atmosphere has no abrupt cut-off, but rather thins gradually with increasing altitude, there is no definite boundary between the atmosphere and outer space. 75% of the atmosphere exists within 11 km of the planetary surface. In the United States, persons who travel above an altitude of 50 miles (80 kilometres) are designated as astronauts.
400,000 feet (75 miles or 120 kilometres) marks the boundary where atmospheric effects become noticeable during re-entry. The altitude of 100 kilometres or 62 miles is also frequently used as the boundary between atmosphere and space.
.....so I loaded up the plane and moved to Middle-EEEE..........OIL..that is......