It enables an efficient search for very faint dwarf satellites over large areas of the sky. (sciencedaily.com)
But in the same area of sky we may be looking at a star that is taking us back a million years. (religion-online.org)
Within minutes, they could determine the general area of the sky where the explosion would occur, point their infrared telescopes in that direction, and wait for the fireworks. (sciencemag.org)