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China to harvest sun’s energy in space and beam it to Earth for power by 2030 (www.scmp.com)

submitted 3 years ago by [email protected] to c/[email protected]

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[–] [email protected] 0 points 3 years ago (1 children)

The sun would be the source of power.

In the vacuum of space, you need to eject mass to move. Unless you're talking about a light sail, which is limited to tiny objects. I don't know how the mars missions worked, but I imagine they would take advantage of Mars's (thin, but still present) atmosphere.

[–] [email protected] 1 points 3 years ago

We're talking 2 different things. Satellites are stationary. The movement would be to target something on the ground. That can be done with servo motors (electro-magnetic). No mass has to be ejected for that.