China plans to build ‘Three Gorges dam in space’ to harness solar power (www.scmp.com)
from yogthos@lemmy.ml to technology@lemmy.ml on 10 Jan 00:13
https://lemmy.ml/post/24615652

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davel@lemmy.ml on 10 Jan 00:53 next collapse

How much energy is that in terms of popcorn?

<img alt="" src="https://lemmy.ml/pictrs/image/e224f3f1-a302-4610-a77e-99830196e036.avif">

sharkfucker420@lemmy.ml on 10 Jan 02:36 next collapse

Dyson sector?

CyberMonkey404@lemmy.ml on 10 Jan 03:09 next collapse

How do they plan to transfer the energy to Earth? Lasers?

yogthos@lemmy.ml on 10 Jan 03:31 collapse

Microwaves most likely. Both NASA and ESA have done feasibility studies on similar ideas.

CyberMonkey404@lemmy.ml on 10 Jan 04:36 collapse

Right, so it’s been some time since I’ve seriously studied physics, but I’m fairly sure that microwave radiation is soaked readily by water/water vapour, which is why we have microwave ovens. So it would seem a lot of this projected energy would just be wasted on heating the atmosphere between the station and ground receiver. Do you happen to have links to the studies, because surely they had to address the issue?

yogthos@lemmy.ml on 10 Jan 04:49 collapse

Here’s a NASA feasibility study ntrs.nasa.gov/citations/19890059163

CyberMonkey404@lemmy.ml on 10 Jan 05:06 collapse

Danke schön

comfy@lemmy.ml on 10 Jan 03:09 collapse

I wish there was some more detail in the article. My two initial impressions are ‘how does the power get to Earth?’ and ‘Mr. Burns blocks out the sun’. (Obviously it won’t be that big)

yogthos@lemmy.ml on 10 Jan 03:25 collapse

The idea isn’t new, the power is beamed to earth using microwaves. A good overview can be found here esa.int/…/FAQ_Frequently_Asked_Questions_on_Space…