If you're still not sold on the existence of aliens, let one of the pros convince you.
Maggie Aderin-Pocock is a space scientist and professional star-gazer, and she says there is "almost definitely" extra-terrestrial life out there.
Aderin-Pocock also spoke about the mind-blowing vastness of the universe, space ketchup and aliens, saying: "It's funny because I get asked that, you know. Are the aliens out there? I would say yes. Almost definitely because...
"We live in a galaxy called the Milky Way. And the Milky Way, if you asked me 10 years ago, I would say the Milky Way contains 200 billion galaxies," she said on the Dish from Waitrose podcast.
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"But then we sent a space probe up called Gaia, and it was doing a survey of the stars, a billion stars in our galaxy, and we realized we were 50% out. There's actually 300 billion stars in our galaxy."
As scientists, she said, "The more we look, the more we see."
Aderin-Pocock added: "300 billion stars in our galaxy, let's say just an average two planets going around each one of those stars in the whole of the universe, 200 billion galaxies - I think would be conceited to think we're the only ones."
Author and scientist Aderin-Pocock - who presents BBC Four show The Sky at Night - lifted the lid on some other space secrets.
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When asked by co-host Nick Grimshaw if anyone had a boozy drink in space, she said "it's generally frowned upon", although she's "pretty convinced people have. But I think it's pretty unofficial."
We can understand why that's kept under wraps - an astronaut flying a massive spaceship under the influence sounds like a recipe for disaster - and it's not like there are any breathalyzer checkpoints between here and the moon...
Aderin-Pocock also spoke about the possibilities of growing food on other planet, mentioning a 2021 experiment that created "space ketchup".
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In it, Heinz filled a warehouse with the equivalent of the material the covers Mars - the Martian regolith.
"So Mars is a red planet - it's quite rusty, it's got iron oxide in it. So they got all this, put it in a warehouse, added other elements... And they were able to grow tomatoes," Aderin-Pocock said.
"They actually made space ketchup. I've so wanted to get a bottle."
It doesn't sound hugely appetising when you think of the harsh conditions of Mars, but the space scientist said: "They say the ketchup tastes just as good as Earth ketchup."