• SeabassDan@lemmy.world
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      1 year ago

      I usually only thought about slingshotting to speed up, I’d never considered slowing down past that one scene in The Martian. Can you elaborate further?

      • 👍Maximum Derek👍@discuss.tchncs.de
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        1 year ago

        There are 2 ways to go sunward. You can shed speed to reduce orbital distance, but 30 km/s is a lot of velocity to change. Or you use another body (often antisunward) and a slingshot to put the craft in a highly eccentric orbit that, at times, is near the sun - so you have many proximal destinations you have to hit without error to meet your course. A mars transfer is easier but you want to hit certain proximity windows.

      • TWeaK@lemm.ee
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        1 year ago

        From my knowledge in KSP, in a nutshell if you pass by a large gravitational mass on one side you’ll speed up, but if you pass on the other side you’ll slow down. Throw in an engine burn across the periapse (closest point) and you’ll amplify that much more.

    • Alien Nathan Edward@lemm.ee
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      1 year ago

      Man the first two acts of that movie are one of the best scifi stories I’ve ever seen and the third act of that movie is one of the worst slasher films I’ve ever seen

    • LifeInMultipleChoice@lemmy.world
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      1 year ago

      I was thinking the same. I wanted to see how long it was going to take to get there, then saw in the article it says it is actually only traveling 1% of the distance from the earth to the sun to offset earth’s gravitational pull with the suns and then create an orbit around the Sun. It doesn’t say how long the travel time was unless I missed it.

      Should create a cool vantage point for photos I imagine

      • arefx@lemmy.ml
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        1 year ago

        Someone posted a graphic that says travel time is about 4 months.

      • TheBlue22@lemmy.world
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        1 year ago

        On one hand, calling that a mission to the sun is a bit… optimistic, on the other, travelling to the sun (and in the same way to Mercury and Venus) is much harder than the other way around.

    • StarkillerX42@lemmy.ml
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      1 year ago

      Ice cold take. Space programs are almost entirely about increasing domestic production with a strong R&D and training emphasis.

    • kava@lemmy.world
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      1 year ago

      It’s not like they could have taken this money and made any significant impact on the problem. Plus space programs have indirect long term benefits that are hard to calculate.

      More scientists and high tech industries is a good thing for a country.

      • doublejay1999@lemmy.world
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        1 year ago

        There are too many poor people so it’s not worth bothering ?

        You could feed and clothes tens of millions of people with India’s space budget - and educate them as rocket scientists if you wanted .

        Space exploration is largely a folly, while people are hungry .

        • kava@lemmy.world
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          1 year ago

          Ok let’s say I’m poor. I have a job that pays very little. I could choose to work more hours to get more money OR I could choose to take night classes and get a degree in something.

          In the second case, I’m giving up temporary income for more long term income. Just because I’m giving up income does not mean I’m making the wrong decision.

          This is a similar thing in India. They are not wasting very much money on these space projects. But if it could kick start a space industry, it’ll more than pay for itself in the long term. Space is only going to get increasingly important and if India is left behind they will lose more money (and therefore more hungry people) in the long term.

          It’s not black and white like you are trying to make it.