This photo taken by the Mars Reconnaissance Orbiter shows dark, narrow, 100 meter-long streaks on the surface of Mars that scientists believe were caused by flowing streams of salty water.
This photo taken by the Mars Reconnaissance Orbiter shows dark, narrow, 100 meter-long streaks on the surface of Mars that scientists believe were caused by flowing streams of salty water. NASA/JPL/University of Arizona
This photo taken by the Mars Reconnaissance Orbiter shows dark, narrow, 100 meter-long streaks on the surface of Mars that scientists believe were caused by flowing streams of salty water. NASA/JPL/University of Arizona

Editorial: Public interest in space is surging

September 29, 2015 9:44 AM