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.
A: NASA spacecraft have a wide range of sizes, from the Cassini probe, which is the size of a school bus, to the Sojourner rover, which is about the size of a microwave. When their solar panels are deployed, the Mars Exploration Rovers (going to Mars in 2003) are about the size of a dining table.