Contact information
Czech Vacuum Society
V Holešovičkách 2
180 00 Praha 8
Czech republic
+420 95155 2753 (tel.)
Secretary:
Monika Frantíková (+420 733 707 463)
ID: 61381811, VAT: CZ61381811
Bank: ČSOB a.s.
Václavské nám. 32, 115 20 Prague, Czech Republic
no: 482836803/0300
Vacuum 
The International Space Station orbits the Earth at an altitude of about 400 km. It flies in an imperfect vacuum with a lot of residual atmosphere. This causes the station to experience low aerodynamic drag and must occasionally correct its orbit.