https://www.mercurynews.com/2019/05/10/blue-what-elon-musks-colorful-way-of-tweaking-jeff-bezos/

If there are two things that Elon Musk loves, they mus be tweeting and using his tweets to tweak Amazon CEO Jeff Bezos — especially when it comes to the two billionaires’ private space programs.

So it should probably have come as no surprise that Musk, who in addition to running Tesla is also CEO of space-exploration company SpaceX, went on Twitter late Thursday to poke at Bezos and his Blue Origin space company. The impetus for Musk’s cheeky tweet was Blue Origin unveiling the Blue Moon, its first planned lunar lander.