If the pressure drops, the soil pressure increases and this leads to subsidence at the ground level. Since exploitation of the Slochteren (Netherlands) gas field started in the late 1960s the ground level over a 250 kmÂ² area has dropped by a current maximum of 30 cm.
Confidence votes 18.5K. There are quite a few tools that the Astronauts use, though for construction and maintenance in space, the Pistol Grip Tool (PGT) is the primary tool of choice. Its predecessor was the Power Ratchet Tool (PRT), originally developed and created for servicing the Hubble Space Telescope.
The orbiter is the part of the craft that gets the lander to the other celestial body. A Rover is a mechanized transport for use on the surface. It sometimes transports humans, and sometimes it transports remotely controlled scientific equipment.This depends on the mission in question.For the Apollo missions, the orbiter, lander and rover were manned craft. Rover is a mechanized transport for use on the surface. It sometimes transports humans, and sometimes it transports remotely controlled scientific equipment. This depends on the mission in question. For the Apollo missions, the orbiter, lander and rover were manned craft.