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upofadownyesterday at 7:02 PM3 repliesview on HN

>SpaceX plans to send one million more satellites into orbit, for space-based data centres, ...

I think we should wait to see how the first satellite data centre works out. It seems fairly unlikely that it could be practical. It seems kind of nuts...

>Reflect Orbital, a US start-up, aims to launch a constellation of very large mirror-like satellites to provide sunlight at night, with reflected beams that span at least five kilometres on Earth's surface.

Straight up nuts with no practical value, even if it did work out.


Replies

nyankosenseiyesterday at 10:36 PM

There are many feasibility and safety issues associated with the Reflect Orbital plan. It doesn’t make as much sense as you might think. For instance, the satellites can only illuminate areas a relatively short time after local sunset. The Sun reflection could potentially damage an amateur astronomer’s eye if one of the satellites crosses their telescope’s field of view: https://bigthink.com/starts-with-a-bang/true-cost-solar-powe...

strangecastsyesterday at 10:06 PM

> I think we should wait to see how the first satellite data centre works out. It seems fairly unlikely that it could be practical. It seems kind of nuts...

I strongly suspect that what'll happen is SpaceX does launch satellites with onboard GPUs, so the SpaceX hypemen can go "the skeptics said it couldn't be done!" and take off before the actual, more crucial question of "does it make _financial_ sense?" is answered in the extreme negative

ggreeryesterday at 7:28 PM

I can think of several practical uses. It would be very useful immediately after a disaster. Lighting up the night would make search & rescue much more effective. It would also allow for more solar power generation in an area, reducing pollution. Extra light at high latitudes in the winter would reduce seasonal depression.

Are they worth the cost/tradeoffs? I don’t know. But there is practical value to lighting up the night.

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