3 ms·

Hmm it's a nice idea but gravity is such a weak force that it seems like it would be hard to move significant enough bits of matter around for it to be detectab

Hmm it's a nice idea but gravity is such a weak force that it seems like it would be hard to move significant enough bits of matter around for it to be detectable. If they were going around annihilating whole stars and clusters then maybe.

midoridensha 3y ago
Or if they built a stellar engine. https://en.wikipedia.org/wiki/Stellar_engine https://en.wikipedia.org/wiki/Stellar_engine