Very long baseline interferometry. A technique whereby a network of radio telescopes can operate as an interferometer with baselines that can be as large as the entire earth, or even larger when satellites are used.


The Very Large Telescope. A European project to build four 8-m telescopes.


A Japanese mission to fly a radio telescope in space to operate as part of an earth-space interferometer.


The Wide-Field/Planetary Camera. The main imaging instrument on the Hubble Space Telescope. A modified version will be installed in 1993 to correct for distortions in the HST mirror.


University of Wisconsin, Indiana University, Yale University, and NOAO 3.5-m telescope.


The X-ray Timing Explorer. A NASA mission to study x-ray radiation.

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