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Grimes, whose real name is Claire Elise Boucher, showed off the new tattoo, which covers pretty much her entire back, writing: "Full back in white ink by @tweakt w sum help from the alien computer brain of @nusi_quero.
"Don't have a good pic cuz it hurts too much and I need to sleep haha, and it'll be red for a few wks, but gna be beautiful alien scars
"Hope everyone's having a good day."
The singer's followers have rushed to compliment the new etching, with one posting: "Siiick."
Another wrote: "Gorgeous. Amazing. Out of this world."
A third commented: "Absolutely gorgeous work."
Grimes, who has a son with partner Elon Musk, has previously said she'd like to relocate to Mars after she turns 50 to help set up a human colony there - well, if anyone can make that happen, it's her other half.
In an online Q&A session, Grimes admitted life on the Red Planet might get tough, writing that it could involve 'manual labour until death most likely' before adding 'but hopefully that can change'. Yep, here's hoping, eh?
During a February 2020 interview with The Face, Grimes was asked whether she would 'rather go to Mars or upload your consciousness to the cloud'.
Grime replied: "Like, these are the main things I'm trying to do. I guess I'd like to upload my consciousness, and then when it's technologically possible, have my consciousness live in some kind of humanoid vessel that can speak and move freely, and then that body can go to Mars and other planets with my mind inside it."
Musk has previously revealed his plans to send one million people to Mars by 2050, announcing that he would be launching three Starship rockets every day while creating 'a lot of jobs'.
Speaking in December, the SpaceX boss said he's pretty sure that humans will land on Mars in the next six years.
He told the Axel Springer Award ceremony in Berlin: "I feel fairly confident about six years from now.
"The Earth-Mars synchronisation occurs roughly every 26 months, so we had one this year, in the summer. That means in roughly two years there'll be another one, and then two years after that.
"So I think six years from now, highly confident, if we get lucky, maybe four years. And then we want to try to send an un-crewed vehicle there in two years."
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