One day, you might be telling your grandson that the great satellite broadband race of the 21st century began with a cat emoji.

On Wednesday, SpaceX CEO Elon Musk called Amazon CEO Jeff Bezos a "copycat" (with the "cat" bit supplanted with a cat emoji) on Twitter, pointing to news of Amazon planning to launch a satellite-powered broadband service.

SpaceX announced plans for a similar project back in 2015, and other companies, including Facebook, are planning something of the sort as well.

The Musk-Bezos feud has been going on for a while, with Musk taunting Bezos about the size of his rockets back in 2015. Alongside Amazon, Bezos is also the founder of spaceflight company Blue Origin, which is a competitor to SpaceX.

In this particular case, Musk is clearly ahead by a couple of years. But the "copycat" assertion will truly be solidified only if Bezos drops his own rap track.