LINEAR

LINEAR (for Lincoln Near-Earth Asteroid Research) was/is an astronomical survey for near-Earth asteroids, begun in the late 1990s by the US Air Force and Lincoln Laboratory. It has discovered over 200,000 SSSBs and some comets.

Circa 2010, Lincoln Laboratory developed the Space Surveillance Telescope (SST), a purpose-built 3.5-meter ground telescope to discover and track man-made space objects. The SST was turned over to the US Air Force, which also continued the watch for near-Earth objects (though one no longer sees the name LINEAR associated with the search). The SST effort is now part of the since-formed US Space Force, and the SST is now located in Australia, run in collaboration with the Royal Australian Air Force.