Radio telescopes can do a thousand times better than that because the observations of widely separated instruments can be combined to create the illusion of a huge dish.

ECONOMIST: Pulsars: In a wink | The

The United States needed to consider the possibility of involvement in conflicts in two widely separated regions of the globe as well as sorties by major adversaries against the East and West Coasts.

CENTERFORSECURITYPOLICY: Center for Security Policy | The Measure of a Superpower: A Two Major Regional Contingency Military for the 21st Century | Page: 2