Solar system and gases planets panoutsos published on February 15, 2011 Stacked 1/5 what is mars nick name red planet hot planet sun mars 2/5 is neptune called the giant gas planet? Type answer. Hint: 3 characters 3/5 what does earth have air water core all the above 4/5 what is methane on the periodic table? Type answer. Hint: 3 characters 5/5 what color is mars? red orange golden non of the above all the above