SpaceX founder Elon Musk briefly discussed the possibility that intelligent extraterrestrials may be out in space and largely dismissed such a scenario. The colorful entrepreneur reportedly made the comments on Saturday at the long-awaited unveiling of his private space company's reusable launch system known as 'Starship Mk.' While musing about his ambition to quickly develop a self-sustaining colony on Mars, he observed that "as far as we know, we're the only consciousness or the only life that's out there. There might be other life, but we've seen no signs of it."
Musk went on to note that he often gets asked "'what do you know about the aliens," presumably since the head of a massive private space company might have some insight into the matter. However, he claimed that he is as in the dark about the subject as the rest of us, revealing that "I'm pretty sure I'd know if there were aliens" and yet "I've not seen any sign of aliens."
More on what Musk had to say about aliens at the Coast to Coast AM website.