And it's not just intergalactic travel that some people are after. For the super-rich who have everything they need, souvenirs from outer space hold great allure. In fact, interest in meteorites from rich and famous collectors has meant that the rocks have gone up dramatically in price. Both Elon Musk and film director Stephen Spielberg are said to be meteorite collectors, while Indian millionaire Naveen Jain has the largest private meteorite collection, which is currently worth $5 million (£3.65m).
In February 2021, an auction of 75 meteorites at Christie's auction house generated millions. The top lot was a piece of the moon that likely fell to Earth after an asteroid or comet hit it, which sold for $525,000 (£382k). Pictured is a Muonionalusta meteorite, formed deep in the iron core of an asteroid that resided between Mars and Jupiter, that has since been fashioned into a sphere. It sold for $350,000 (£255k), more than 19 times its top estimate of $19,000 (£13.8k), at the Christie's auction last year.