text: Scientists Plan to Map Known Universe By FRANK GRIFFITHS    SAN JUAN, Puerto Rico (AP) -- The radio telescope at Puerto Rico's Arecibo Observatory will begin mapping the known galaxy on Friday, scientists said.    The radio telescope, the world's most sensitive listening device that is powerful enough to hear planets forming several billion lights years away, received six more radio receivers to expand its range...
inputs: Scientists Plan to Map Known Universe By FRANK GRIFFITHS    SAN JUAN, Puerto Rico (AP) -- The radio telescope at Puerto Rico's Arecibo Observatory will begin mapping the known galaxy on Friday, scientists said.    The radio telescope, the world's most sensitive listening device that is powerful enough to hear planets forming several billion lights years away, received six more radio receivers to expand its range...