Recent comments in /f/space

Bitter_Gur931 t1_jaetj1h wrote

On this line I'm completely obsessed with the youtube channel History of the Universe: https://www.youtube.com/channel/UCtRFmSyL4fSLQkn-wMqlmdA

I'm very much a layman, but they're really fantastic long form videos and part of what makes them so engaging is they cover not just our current models and theories, but the evolution of those models and the stories of the scientists that made the discoveries. Top-notch content all around and for all the research involved they put out new videos pretty frequently too.

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Ape_Togetha_Strong t1_jaes4m6 wrote

Personally, I think the best way to learn about what we know now is to learn about the history of our knowledge of astronomy and space. It's a lot easier to understand why certain things were significant and the train of thought that went into them with historical context.

Check out the book "The Watershed" by Arthur Koestler. The invention of the telescope was a true turning point for our understanding of the universe. Humans were fascinated (and confused) by the sky and the stars and planets for 10s of thousands of years, and then suddenly we could see things like moons orbiting Jupiter, mountains casting shadows on the moon, and crescent lighting on Venus. Everything became more real and tangible and open to scientific exploration, and really helped push people towards the idea that we are not the center of the universe.

Astronomy really was the spark for the scientific revolution.

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SpartanJack17 t1_jaes2dz wrote

Hello u/HunkyMump, your submission "How does time dilation affect our observations of very distant objects, considering the expansion of the fabric of the universe is causing them to become more and more distant?" has been removed from r/space because:

  • Such questions should be asked in the "All space questions" thread stickied at the top of the sub.

Please read the rules in the sidebar and check r/space for duplicate submissions before posting. If you have any questions about this removal please message the r/space moderators. Thank you.

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Bipogram t1_jaenctt wrote

Reply to comment by Drotkowski in Starting again with space by Drotkowski

No agency as such, but a great many skilled workers and companies.

One instrument I worked on in the 90s had a crucial element (four titanium wires as thin as hairs stretched across a gap of 50mm, and all that inside thin-walled titanium cans with walls no thicker than playing cards) that was made in Poland.

<TIL: the first head of Polsa, Prof Banaszkiewicz, is the lead scientist of this very device I'm describing! He's done well!>

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CardboardSoyuz t1_jaemcjg wrote

Reply to comment by Shrike99 in The Case for Callisto by MoreGull

I used one of those rando London Underground subway style delta v charts -- my readers weren't handy -- and I think I grabbed the delta-v to Jupiter low orbit in there. My bad! I see from this one at 13.54 and Mars at 9.5 (I was doing the sums in my head too).

https://space.stackexchange.com/questions/14653/how-can-delta-v-and-aerobraking-as-shown-in-this-chart-be-explained

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Interesting-Ad7020 t1_jaelpky wrote

Would recomend the books An Astronaut's Guide to Life on Earth by astronaut chris hadfield and Endurance by Scott Kelly. Since you are from Europe I would recommend visiting ESA’s web page. Also there are great podcast like “off nominal” and “the space above us”. Last I would check out the polish space agency and see if they have any events planed.

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nednobbins t1_jaelc5r wrote

Yeah. I'm wondering how scalable that is.

I had initially assumed that the sort of infinite scalability you see in video games is just for video games and that in an actual space station you would run into some practical considerations that keep you from just adding modules indefinitely.

Now I'm starting to doubt that assumption.

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ChrisARippel t1_jaegn0r wrote

You are right that realistic scale creates problems because each planet further out is about twice as far as the planet further in.

Since I only just imagined the game in my head last night, I haven't played with "fixes". This is something that game designer would have to do.

Alterations might be to only use the four outer planets and stretch their au from the Sun less than double. And the board could be only half or a quarter of a full orbit.

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