Jeff Bezos trolled SpaceX's historic landing in a tweet
As soon as the Falcon 9 rocket's first-stage booster landed upright in Cape Canaveral, praises for Space X and its founder Elon Musk began pouring in from around the world.
However, Amazon CEO Jeff Bezos - whose private aerospace company Blue Origin landed a smaller, suborital rocket in November, couldn't resist a subtle jab in his congratulatory tweet, reminding the world who helped pave the way.
Of course, there are major differences between the two aeronautical feats. Bezos's single-stage rocket was easier to fly and less powerful than Musk's, and was bound by the 62-mile-high limit of suborbital space.
Meanwhile, with more speed and thrust, orbital rockets can deliver payloads into orbits ranging from thousands to tens of thousands of miles above Earth's surface.