Codraroll Posted October 30, 2022 Share Posted October 30, 2022 2 hours ago, magnemoe said: Well Moscow was the last capital ship sunk ... Depending on what happened to the Admiral Makarov, which reportedly was blown up yesterday. Anyway, I recently re-read The Martian and noticed how some of the assumptions made in writing that book have changed as time goes on. It's not so much "bad science" as a change in the understanding of how things work. A major plot point in that book (which takes place in 2035) is that NASA doesn't have rocket boosters available that can hurl even a small probe to Mars on short notice, and only one extra chance is given when China repurposes one of theirs. Now, barely ten years after the story was first written, rapid reuse of Falcon 9 boosters would make this predicament much less of an issue. Even a single Falcon 9 can get 4 tons to a Mars transfer orbit, while the Iris probe in the book was only 900 kg. You may not exactly be able to dial SpaceX and have a supply probe on the way to Mars by the next month, but ... hmm ... actually, may you, if it's enough of an emergency? Also, the listed capabilities of the Ares mission solar panels and rover batteries seem kind of bad. 10.2% efficiency is far from great for a solar panel these days, and the rover batteries were stated to have a capacity in the low tens of kilowatt-hours - less than what you'd find in any modern electric car. But I guess these can be excused by "space-grade gear has lower specs than Earth-based gear because concessions were made to weight/radiation hardening/dust protection/something". Quote Link to comment Share on other sites More sharing options...
GuessingEveryDay Posted October 30, 2022 Share Posted October 30, 2022 7 minutes ago, Codraroll said: Also, the listed capabilities of the Ares mission solar panels and rover batteries seem kind of bad. 10.2% efficiency is far from great for a solar panel these days, and the rover batteries were stated to have a capacity in the low tens of kilowatt-hours - less than what you'd find in any modern electric car. But I guess these can be excused by "space-grade gear has lower specs than Earth-based gear because concessions were made to weight/radiation hardening/dust protection/something". Don't forget Mars is much farther away from the Sun compared to the Earth, so solar panels on Mars, would always be worse than those on Earth. Unless we figure out how to achieve 100% efficiency, which is impossible. Quote Link to comment Share on other sites More sharing options...
Codraroll Posted October 30, 2022 Share Posted October 30, 2022 18 minutes ago, GuessingEveryDay said: Don't forget Mars is much farther away from the Sun compared to the Earth, so solar panels on Mars, would always be worse than those on Earth. Unless we figure out how to achieve 100% efficiency, which is impossible. Efficiency doesn't have anything to do with that, though. It's simply a measure of how much of the incoming sunlight it can capture, independent of what that amount actually is. Mars receives less sunlight than Earth, but the portion of it a solar panel would be able to capture would not be affected by that. And in The Martian, the efficiency of the solar panels is explicitly said to be 10.2 %, which is less than half that of state-of-the-art solar panels today. Quote Link to comment Share on other sites More sharing options...
Gargamel Posted October 31, 2022 Share Posted October 31, 2022 5 hours ago, Codraroll said: You may not exactly be able to dial SpaceX and have a supply probe on the way to Mars by the next month, but ... hmm ... actually, may you, if it's enough of an emergency? A quick phone call with somebody with imminent domain powers might grease those wheels a bit too. Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted October 31, 2022 Share Posted October 31, 2022 9 hours ago, Codraroll said: You may not exactly be able to dial SpaceX and have a supply probe on the way to Mars by the next month, but ... hmm ... actually, may you, if it's enough of an emergency? https://en.wikipedia.org/wiki/Launch_window if SpaceX is still limited by physical laws. Quote Link to comment Share on other sites More sharing options...
Dinlink Posted October 31, 2022 Share Posted October 31, 2022 (edited) The Expanse: No serious Kerbal would believe a show where spaceships comes without snacks... Who goes into space without snacks?? Nonsense... Edited October 31, 2022 by Dinlink Quote Link to comment Share on other sites More sharing options...
Minmus Taster Posted October 31, 2022 Share Posted October 31, 2022 57 minutes ago, Dinlink said: The Expanse: No serious Kerbal would believe a show where spaceships comes without snacks... Who goes into space without snacks?? Nonsense... I'm sure there are many snacks onboard, also burning at 8G's from Earth to Jupiter in a week or two is pretty Kerbal to me. Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted October 31, 2022 Share Posted October 31, 2022 The same Expanse. In the first season the beltalowda were high and thin, suffering from bad food, drinking something special (can't remember exactly). In other seasons they have been shortened and don't differ from the terrestrial humans. Probably, the protomolecule had affected them. Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted November 23, 2022 Share Posted November 23, 2022 1899 The moment when the heroine (spoiler) Spoiler stops the time and takes the bullet with fingers from air. Conservation laws! Where are you? Both momentum and kinetic energy should release somehow to stay constant. Quote Link to comment Share on other sites More sharing options...
Nuke Posted November 23, 2022 Share Posted November 23, 2022 (edited) 2 hours ago, kerbiloid said: 1899 The moment when the heroine (spoiler) Hide contents stops the time and takes the bullet with fingers from air. Conservation laws! Where are you? Both momentum and kinetic energy should release somehow to stay constant. well considering that... Spoiler ...the whole damn thing is a simulation... ...i think it works out. the thing that really bugs me is... Spoiler ...the wonkiness of the centrifuge on the prometheus. which now that i think about it may also be a simulation. from the previews i kind of figured this for an occult lovecraftian cosmic horror and not scifi show, though im pleasantly surprised. Edited November 23, 2022 by Nuke Quote Link to comment Share on other sites More sharing options...
Gargamel Posted November 23, 2022 Share Posted November 23, 2022 Thank you for the spoilers! Quote Link to comment Share on other sites More sharing options...
Minmus Taster Posted November 23, 2022 Share Posted November 23, 2022 1 hour ago, Gargamel said: Thank you for the spoilers! I didn't realize it was on the Netflix show until I saw all of it Quote Link to comment Share on other sites More sharing options...
StrandedonEarth Posted December 3, 2022 Share Posted December 3, 2022 Scanning the bottom shelf of my bookcase I noticed a book, er, graphic novel(?) that was given to me by my Big Brother for Christmas when I was 10 or so, over 40 years ago. And even back then, I knew that a meteor in deep space would not be flaming or leaving a smoke trail... Kudos to anyone who recognizes this story... Quote Link to comment Share on other sites More sharing options...
Kerbart Posted December 3, 2022 Share Posted December 3, 2022 2 hours ago, StrandedonEarth said: Kudos to anyone who recognizes this story... The style reminds me a bit of the work of Don Lawrence, (Storm, Trigan Empire) although that's likely wrong, as well as too exotic for what you're referencing... Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted December 3, 2022 Share Posted December 3, 2022 (edited) 2 hours ago, StrandedonEarth said: And even back then, I knew that a meteor in deep space would not be flaming or leaving a smoke trail... These two guys in the tiny boat even suddenly swapped their places from shock, too. Spoiler Besides the fact that the blonde's face has been deformed by heat, and his dad(?) wears black spectacles and probably doesn't see anything at all. Btw where's his fishing rod? Edited December 3, 2022 by kerbiloid Quote Link to comment Share on other sites More sharing options...
StrandedonEarth Posted December 14, 2022 Share Posted December 14, 2022 On 12/2/2022 at 8:55 PM, Kerbart said: The style reminds me a bit of the work of Don Lawrence, (Storm, Trigan Empire) Good eye, it is indeed, The binding is held together with forty-year-old packing tape... Quote Link to comment Share on other sites More sharing options...
AtomicTech Posted December 15, 2022 Share Posted December 15, 2022 On 10/30/2022 at 3:02 PM, GuessingEveryDay said: Don't forget Mars is much farther away from the Sun compared to the Earth, so solar panels on Mars, would always be worse than those on Earth. Unless we figure out how to achieve 100% efficiency, which is impossible. But we can get pretty close! Even 50% would be amazing! Quote Link to comment Share on other sites More sharing options...
Kerbart Posted December 15, 2022 Share Posted December 15, 2022 On 12/13/2022 at 8:51 PM, StrandedonEarth said: Good eye, it is indeed, … The binding is held together with forty-year-old packing tape... That’s a pretty rare find in the US! I grew up with the comics. Scientific accuracy was never a goal but the stories were certainly exciting and fun to read, especially for 10 year olds. And the visual style — clearly very, very unique. I didn’t even expect to be right about it!! Quote Link to comment Share on other sites More sharing options...
Abel Military Services Posted January 12, 2023 Share Posted January 12, 2023 A Chinese film "Moon Alone" NEVER LET A KSP PLAYER WATCH THIS Quote Link to comment Share on other sites More sharing options...
intelliCom Posted January 12, 2023 Share Posted January 12, 2023 1 minute ago, Abel Military Services said: A Chinese film "Moon Alone" NEVER LET A KSP PLAYER WATCH THIS You mean Moon Man? https://en.wikipedia.org/wiki/Moon_Man_(2022_film) Quote Link to comment Share on other sites More sharing options...
Abel Military Services Posted January 12, 2023 Share Posted January 12, 2023 Just now, intelliCom said: You mean Moon Man? https://en.wikipedia.org/wiki/Moon_Man_(2022_film) Yeah. Worst sci-fi I've ever seen. Quote Link to comment Share on other sites More sharing options...
tater Posted January 12, 2023 Share Posted January 12, 2023 Just now, Abel Military Services said: Worst sci-fi I've ever seen. Worse than Interstellar? Cool, will not watch. Quote Link to comment Share on other sites More sharing options...
Abel Military Services Posted January 12, 2023 Share Posted January 12, 2023 Just now, tater said: Worse than Interstellar? Cool, will not watch. Especially the "light the Earth" part. Everyone who read What If? knows that it's impossible. Quote Link to comment Share on other sites More sharing options...
intelliCom Posted January 12, 2023 Share Posted January 12, 2023 4 minutes ago, tater said: Worse than Interstellar? Cool, will not watch. Okay, remind me how bad of a movie Interstellar is. It has some scientific accuracy problems, but it's miles better than what Star Wars/Trek does. Quote Link to comment Share on other sites More sharing options...
tater Posted January 12, 2023 Share Posted January 12, 2023 5 minutes ago, intelliCom said: Okay, remind me how bad of a movie Interstellar is. I want my 2 hours back. I hated all of it except the O'Neill cylinder. Starting with the initial premise, the SSTO thing, the idiotic water world garbage, pretty much everything. Oh, and the writing, characters, and story. Also the soundtrack. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.