On Friday morning, SpaceX and Tesla Motors CEO Elon Musk tweeted out an April 2016 Inverse article detailing new research focused around the Drake Equation — a framework for estimating the odds that an intelligent alien civilization exists elsewhere in the universe. Like most of Musk’s outings on social media, this one sparked quite the array of interest among his fans. The fact that this story had to do with aliens was just the icing on the cake.

At first, it might seem odd that Musk was digging through the internet for information on extraterrestrial life after midnight. (But honestly, who among us hasn’t furiously typed “aliens” into Google alone after everyone else has gone to bed? Right??)

Then you remember that Musk might be an alien — or at least he used to be one, he once claimed. (Yes, I know it was a joke, please don’t @ me.) Regardless, it’s clear that Musk’s passion for space is clearly not just limited to the realm of the human species.

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