Chuck Steidel, at the Keck telescope on Mauna Kea, Hawaii, finds numerous galaxies 12 billion light-years away; more than 2,000 will be discovered within a few years.
Chuck Steidel, at the Keck telescope on Mauna Kea, Hawaii, finds numerous galaxies 12 billion light-years away; more than 2,000 will be discovered within a few years.