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instrument comparison table
Subject has purpose has location has launch date has angular resolving power has approximately elliptical orbit has launch vehicle has wavelength sensitivity is a kind of has effective diameter has orbital period has launch location has focal ratio has aperture has definition have orbit decay date has orbital inclination has ground communication station has attitude control orbit
artificial satellite or center of gravity     satellite     a satellite made by humans which is gravitationaly bound and in orbit of a larger physical object    a more massive physical object
fusion device or center of gravity     instrument           
high energy detector or center of gravity     instrument     Device for recording the presence of subatomic particles. A typical modem detector consists of an array of electronic sensors connected to a computer, capable of recording the paths of the particles as they fly out from the collision site in a particle accelerator.     
optical device or center of gravity     instrument           
particle accelerator or center of gravity     instrument     A machine for speeding subatomic particles to high velocity, then colliding them with a stationary target or with another beam of particles moving in the opposite direction. (In the latter instance, the machine may be called a collider.) At velocities approaching that of light the mass of the particles increases dramatically, adding greatly to the energy released on impact. The resulting explosion promotes the production of exotic particles, which are analyzed according to their behavior as they fly away through a particle detector.     
telescopeobserve celestial objects      instrument     A device for gathering and amplifying light or X rays, gamma rays, or other forms of energy.     

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