4 ms·
Same way it got there? Laser focused on earth? Needs good aiming though.
by lunchTime42 10y ago
Same way it got there?
Laser focused on earth?
Needs good aiming though.
- Cerium 10y agoModulated retro-reflector. We pulse firing a lower power laser at it and it reconfigured the mirror to modulate the returned signal. Essentially an interstellar DLP projector.