Argument: Mars is uniquely suitable for a manned mission
Neil deGrasse Tyson, director of the Hayden Planetarium at the American Museum of Natural History. "Why Go to Mars." 2004: "Mars, as cold as it is, is not as oppressive an environment as almost any other place we can think of going in the Solar System. From a runaway greenhouse effect, Venus is 900 degrees Fahrenheit and would melt or vaporize most things you sent to its surface. Mercury is also very hot, being close to the Sun. So when you look at the nearby terrestrial planets, Mars is looking … just right, in spite of the challenges."