J
JonClarke
Guest
Guys, should we not stay on track? T tauri stars, Wild 2 and the rest are very interesting topics but deserve their own thread. This one is about Martian gullies.<br /><br />Jon <div class="Discussion_UserSignature"> <p><em>Whether we become a multi-planet species with unlimited horizons, or are forever confined to Earth will be decided in the twenty-first century amid the vast plains, rugged canyons and lofty mountains of Mars</em> Arthur Clarke</p> </div>