isleepinahammock t1_ixizels wrote
Reply to comment by [deleted] in China says it will use the Tiangong Space Station to test the transmission of space-based solar power to Earth. by lughnasadh
Also, consider that rockets themselves emit lots of CO2 as they launch. Sure, you can use a hydrogen/oxygen rocket, but then you need a source for hydrogen. And if you don't want greenhouse emissions, that means you need a huge plant cracking water into H2 and O2. In other words, you effectively need to build a huge energy storage facility. You could just attach a fuel cell to your rocket H2/O2 plant and skip the rocket launch entirely. It is possible to create green rocket launches, but the equipment needed is essentially already a massive base load solar/wind plant.
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