Similar Material w88 1/15 p. 7 Insight on the News The Red Planet Revisited Awake!—1999 Probes to Other Planets Awake!—1973 Mars Up Close Awake!—2009 A Robot Explores Mars Awake!—1998 Mars’ Hill Insight on the Scriptures, Volume 2 Mars Hill Aid to Bible Understanding Our Unique Solar System—How It Got Here The Watchtower Announcing Jehovah’s Kingdom—2007 Fascinating Planets—for Our Enjoyment Awake!—1975 Is There Intelligent Life Out There? Awake!—1981 Space Exploration—What Does the Future Hold? Awake!—1992