Seafloor exposed. (Navy satellite pictures have enabled scientists to map the entire ocean floor)(Brief Article) From: Science World | Date: February 23, 1996| Author: Ehrenpreis, Yael | COPYRIGHT 1996 Scholastic, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group.Copyright information

Until recently, scientists knew more about the surface of Venus than about the underwater surface of our own planet. But now researchers have patched together Navy satellite photos to map the ocean floor more accurately than ever before.

The map (shown above) shows the rises and drops in the ocean floor, which scientists can use to figure out where mountains, valleys, and other seafloor features lie.

"This is the first map of the entire ocean floor," which covers 7...