3 ms·
For this approach I don't know. It's a wire mesh so I think it can resist some damage. I read about other approaches that make me marvel at mankind's genius. F
by marcyb5st 5y ago
For this approach I don't know. It's a wire mesh so I think it can resist some damage.
I read about other approaches that make me marvel at mankind's genius. For instance, on the moon you could slowly spin a pool of liquid Mercury to obtain a radio telescope that is basically immune from microimpacts. Not sure how it would work once the mercury freezes solid due to lack of sunlight, but I think it's such a beautiful (but maybe impractical) idea :).
- Ginden 5y ago> Not sure how it would work once the mercury freezes solid due to lack of sunlight, but I think it's such a beautiful (but maybe impractical) idea :). Can't you heat it through induction heating? Vacuum is good isolation, so it won't lose heat too fast. Keeping whole pool above -30 °C probably won't require too much energy.
- marcyb5st 5y agoMaybe. I honestly don't know and just read about it quite a while ago and can't remember the details.
- iSnow 5y agoBut mercury is a heavy metal. It must be prohibitively expensive to transfer the amount needed to the moon from earth.
- marcyb5st 5y agoAgreed, that's why I wrote maybe impractical. I just find it fascinating :)
- Someone 5y agoYou can do that on earth, too. See https://en.wikipedia.org/wiki/NASA_Orbital_Debris_Observatory https://en.wikipedia.org/wiki/NASA_Orbital_Debris_Observator..., https://en.wikipedia.org/wiki/Large_Zenith_Telescope https://en.wikipedia.org/wiki/Large_Zenith_Telescope for (decommissioned) examples (both found via https://en.wikipedia.org/wiki/Liquid-mirror_telescope https://en.wikipedia.org/wiki/Liquid-mirror_telescope) The idea apparently came from Isaac Newton.