I found this movie rather enjoyable. It may have it's issues, after all no movie is perfect. However credit must be given for the performance of the main actress and for the simple fact that this movie was shot in space and still looked good. And to address the negative reviews I must say this. This movie was made to be as realistic as possible and was filmed under significant constrictions. Filming with real equipment for the space programme, aircraft, spacecraft including the ISS, as well as real locations or detailed sets based on them. Multiple "actors" were not experienced actors but space industry professionals. Real cosmonauts, technicians, doctors and others. And finally, when it comes to reviews for this movie on this website I find them extremely suspicious. The majority of the reviews are above 5/10, afterwards very few reviews between 5 and 2/10 , and then a huge spike of 1/10. To me, based on pure logic, this seems like review bombing or negative reviews based only on the fact that this movie is Russian. I find it extremely suspicious that almost nobody reviewed it from 2 to 5.
Review of The Challenge
