Elon Musk doesn't seem to be the only one who believes in Mars being attainable this decade.
Tina and Tom Sjögren plan to get to – and back – from Mars in their own rocket, with their own built-in rocket engine. Here are the eight steps required to reach the red planet.
There are only two specific projects in the whole world aimed at taking humans to Mars. One is Elon Musk's SpaceX. The other is two adventurers.