Submitted by Anonymous (not verified) on Wed, 1995-03-01 08:00
This is a new monthly feature produced by the Caltech Media Relations Office, in collaboration with Caltech's faculty, to answer commonly asked or particularly intriguing questions about science and the natural world.
Submitted by Anonymous (not verified) on Tue, 1995-01-10 08:00
PASADENA—Caltech astronomers have counted galaxies to a limit of about 24th magnitude, the faintest ever counted in infrared light. Observing five small patches of sky with the 10-meter telescope at the W. M. Keck Observatory in Hawaii, the scientists found that the numbers of galaxies continued to rise with increasing faintness, a result that agrees well with models in which the universe is "open" and will continue to expand forever.