Viewers have accused The Chase of awarding £1,000 for a wrong answer about Matt Damon's science fiction movie The Martian.
Contestant Mo, an IT consultant from London, was appearing on the ITV game show when he was asked by Bradley Walsh to name the occupation of Matt Damon's character in the 2015 movie.
He answered astronaut and Bradley said that was correct - but viewers were quick claim astronaut is the wrong answer and Matt Damon's character, Mark Watney, is actually a trained botanist.
Mo was awarded £1k for the answer
Matt Damon in The Martian
Bradley accepted astronaut as a correct answer
In the original book by Andy Weir, the character says on multiple occasions that he's a botanist with a mechanical engineering qualification.
Mark, who is chosen for a mission to Mars, introduces himself to readers by saying: "I'm a botanist and mechanical engineer; basically, the mission's fix it man who played with plants. The mechanical engineering might save my life if something breaks."
Later on, he adds: "Hell yeah, I'm a botanist! Fear my botany powers!"
Matt's character is a botanist who travels to Mars
The question was about the 2015 movie The Martian
Viewers thought the answer was wrong - but NASA says it's right
So viewers took to Twitter to point out The Chase's error.
One wrote: "Mark Whatney in the Martian was actually a botanist #TheChase."
Another said: "So a question on @ITVChase was 'What is the occupation of Matt Damon's character in The Martian' - Correct answer Astronaut #botanist."
A third wrote: "Technically Matt Damons "TheMartian" character was a Botanist not an astronaut. #TheChase."
However, in the book, Mark is also referred to an astronaut on multiple occasions as well, including during a news report which talks about the fate of "astronaut Mark Watney" on his mission.
Mark himself adopts the title "astronaut" after his original Mars mission gets somewhat derailed and he ends up stranded having to fight for his life.
The Martian is based on Andy Weir's book
NASA calls Matt's character an astronaut
At one point he says: "If I get back to Earth, I'll be famous, right? A fearless astronaut who beat all the odds, right? I bet women like that."
And at another, he says: "It just feels nice to be an astronaut again. Not a reluctant farmer, not an electrical engineer, not a long-haul trucker. An astronaut. I'm doing what astronauts do."
Meanwhile, space organisation NASA refers to Mark Watney as a NASA astronaut in a 2015 article about Matt and the movie - and surely NASA would be the authoritative source?!
Matt's character calls himself a botanist, mechanical engineer and astronaut
NASA scientists and engineers served as consultants on the film.
The dictionary definition of astronaut is someone trained to travel in a spacecraft - so even though Mark is a botanist and mechanical engineer, he would require astronautical skills to reach Mars.