The Martian has come under fire from a space expert who believes the movie has not been true to the science of the story.
In the film, Matt Damon's character boldly says he is going to "science the shit out of this," in order to make it back to earth after being stranded on Mars.
However, a former director of the Space Policy Institute at George Washington University, has said a few scenes from the film, including ones showing how the protagonist walks, are not scientifically accurate.
John Logsdon explained to the Sunday Times that the low gravity on Mars would actually cause Damon's character to hop and not walk, as he is seen to be doing on the film.
Logsdon also said the hurricane that blows Damon's character to Mars would in actual fact be a light breeze because of the planet's thin atmosphere.
“The sand storm is inaccurate too. The atmosphere is too thin for such a force. You would not feel winds no matter how fast they were,” he told the Sunday Times.
Carrying on his critique, he added that the film failed to capture how radiation from Mars could affect Damon's character in the long term.
“The botanist might get very sick or, if he got home, die of cancer a year later,” he noted.
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The film however, has won praise for getting most of the nitty gritty technicalities right.
NASA worked quite closely with director Ridley Scott and his team to ensure that the finished product had a healthy helping of textbook science.
Astronaut Chris Hadfield, Commander of the International Space Station, said: “A book I just couldn’t put down! It has the very rare combination of a good, original story, interestingly real characters and fascinating technical accuracy…reads like “MacGyver” meets “Mysterious Island.”
Indeed the author, Andy Weir, who is a self confessed "nerd" explained: "To a nerd like me, working out all the math and physics for Mark’s problems and solutions was fun."
The Martian is due for release in the UK on September 30.