There actually are few liquid mirror telescopes in operation at the moment. The biggest is the 6 meter Large Zenith Telescope.
.TO SEE THE MEN ON MARS?
By LITTELL McCLUNG
PROF. ROBERT W. WOOD, of the Johns Hopkins University, has perfected an invention — based on a discovery — that may revolutionize the present costly and cumbersome methods of studying the stars and exploring the universe for new planets, suns, moons, and asteroids.










