3 ms·

Coming from a lot of the people who have doubted reusable rocket engines...

• gozur88 11y ago
  I don't think so. Engines have been used before. Rockets have been landed on their tails by many organizations. And I don't think too many people doubt SpaceX can go to Mars. The questions are over the date.
  • robryan 11y ago
    Most spacex dates slip. Sure they are wildly optimistic but the end result is still much faster than anyone else.
    • gozur88 11y ago
      That's the point, though. They do miss most of their deadlines, and if they miss the 2018 date they're going to have to wait a few years for a comparable launch window.