While in the Soyuz, Dr. Stone makes radio contact with an Inuit named Aningaaq, and they converse for a bit despite a language barrier, making a connection when she overhears his dogs on the radio. Aningaaq's words are not subtitled in English, but for his side of the conversation, he is speaking in his native tongue about one of his dogs being old and needing to be put down soon. The radio signal cuts out without any evidence of dog death, but in a short film tie-in showing the conversation from the other side, we hear a gunshot at the very end.
Very early in the movie one of the astronauts in the background is hit by a piece of shrapnel. Shortly afterwards you see the body up close and they have a gaping hole in their face.
Not during the story, but the main character talks about how she's still mourning the death of her daughter which happened at a point before the story started.
In the beginning, there are a couple references to Sandra Bullock’s character being sick and queasy from her first time in space, but she never vomits.
[SPOILERS, though it’s early in the movie] Matt sacrifices himself. He pushes Ryan towards the shuttle, pushing himself out into open space, knowing it will result in his death. He then dies off-camera when his oxygen runs out.
At one point, the main character despairs of her situation and attempts suicide by shutting off her oxygen supply. She changes her mind in time to restore the oxygen and survive.
At one point the main character has a hallucination or vision while oxygen-deprived which is filmed as if it is actually happening until shortly before she wakes up and discovers it wasn't real.
None within the film but director Alfonso Cuaron is pro-Autism Speaks and has made propaganda for them before. He has also made the hateful statement that Autism can be “cured” (what ABA intends to do) through herbs, prayer, and voodoo.
Near the very beginning of the movie, an astronaut in the background is hit with shrapnel. That isn’t graphic, but later when you see the body closer up you see a gaping hole in the person’s face.