Project Hail Mary’s Most Confusing Moments Explained

How can Grace's ship catch up Rocky's ship ? They start traveling home at the same time, then after period of time (doesn't know how long on the movie ) Grace realize something wrong and change course to catch up Rocky, how is that possible unless Rocky's space ship travels too slow ? Even when Taumoeba consume all Astrophage fuel on Rocky's ship, it still maintain constant velocity, right ?

I‘m confused after watching the movie maybe someone can help me out.
1: How do grace and rocky EXACTLY get to eridia? Which of boths ship do they take and how do they get the other to the selected ship after we see them reuniting? Since the „pipe thingy seems to be gone and also graces suit to survive on rockys ship
2: How does grace get and survive on rockys planet? Rockys ship being so hot I understood as it replicates rockys planet, so I thought it‘s extemely hot and grace wouldn‘t be able to survive there and then
3: At the end we see grace just normally being on eridia while rocky is in a suit (?) thingy on his own planet to survive? I didn‘t really get that and also why the class is behind the glass thingy. Or did they build a whole atmosphere for grace to live in before landing on there?

Most of these were actually explained and spoken about in the film lol

Another plothole… The Eridians sent one ship 46 years ago, and then no other ship, even though they have a much easier time producing astrophage. And it's a little unclear what Rocky expected to achieve after his crew died. It might have been a better decision for him to return to Erid so that the Eridians can send more science Eridians, maybe even figuring out why they died on that ship.

It was 1 in 7000 and not 1 in 1 million. for the gene.

Read the book. It's one of the best sci fi books ever.

Love this movie great movie

From what I've seen elsewhere, Rocky's body is mostly inorganic. When he busts out of his environment to save Grace, the oxygen hits him and he's hot enough that his organic tissues catch fire. That's why the smoke and the trail of ash.

Fun fact; in the book Grace tries to save Rocky, but he actually damages him more by mistake. Rocky took longer to recover because of Grace´s attempt to save him.

What does he eat while on eren ? Rockys biology? How was rockys civilization so much more advanced but not familiar with radiation or relativity considering those are probably the two most important concepts in space?

How could the rocky people not know about radiation if they are able to build space ships and fly into space?
Makes utterly no sense.

Idk I see and hear people saying they had trouble following it and you kinda need to know the book but I understood everything perfectly fine. It was very obvious and well said you just need to well… Watch the movie

Overall I very much liked the movie. A very good adaptation. Two complaints about the movie though. 1) Grace also saves Rocky. He is the one who gets Rocky back into his side of the Hail Mary. Also, I feel like it's glossed over, if addressed at all, that Grace does not know if he even has enough food to get back to Earth and has no other way to get food. By making the decision to go save Rocky and Erid he is committing to a suicide mission. This is a big part of his character arc/redemption since he refused to go on the Hail Mary mission. 2) I did not like the character changes to Strat. While not necessarily evil or even bad, she is very cold and calculated. No one really gets along with her other than Grace and even that is tenuous. I guess as a bonus 3) there were some parts of the movie that were very serious or dire that the movie made kind of light/goofy. Strat essentially murdering Grace being one of them. Change those things and explain more of the science and this movie is perfect.

It was one in 7,000 not one in a million

They dumbed down the scene where Rocky gives Grace some fuel to get home with, saying Rocky would take 6 years longer to get home. If I recall the book correctly Rockys ship had more fuel left over from his original journey than expected because his species was unaware of the effects of time dilation as you approach the speed of light, so it got there quicker than expected.

Hail Mary speed

I thought the two people on the hail mary died the same way that the rest of rockys crew did due to exposure.

Sorry, but relying on the movie to get all the scientific minutiae in and explained is asking a little too much of Hollywood. Read the book then see the movie if possible.

This movie needs like a 4 hour extended cut.

What is Grace going to eat on this planet?

Proper enjoyed this movie

Honestly what pissed me off during the movie, is how the hell Rocky knew the human language ? Was he expecting to meet a human Grace ? Book nerds do you have any clue plz ?

I think the book went into a bit more detail ( or was it the movie ) about the coma tech. A company developed the coma stuff for cancer patients to be able to sleep during treatment. Human Doctors were going to monitor the process. The coma tech on the spaceship had to be 100% automated. THAT automation part was being designed as the ship was being built. It was implied that something might have happened to the other two astronauts that the 100% automation stuff could not handle since the autodoc? had not actually went through any years-long tests before it was setup in the spaceship. Sometimes when your on the bleeding edge… you bleed.