Why can’t you just say what time you sent the message to the astronaut and have him say what time he received and sent his message so that you know how long it took
2026-06-21 19:02:59
5
Gl1tch :
You can “easily” test with a camera that shoot in 1 billion frames per second and see the light scattered, that gives you a three point shot which should prove speed of light is local and constant or however you’d describe it
2026-06-21 18:38:17
1
:) :
am i dumb or could you not shoot a laser at a photo sensitive receptor and just measure to the time for it to react, adjusting for possible variations like time to stop the timer and such?
2026-06-21 18:17:41
0
marktumilty4 :
measure it with two gears and a mirror, aligned as gear, 8km,gear,8km,mirror. You can measure the gear speed, you can align them. If light travels at different speeds in the different directions then it will not pass cleanly through both gears.
2026-06-21 12:10:16
1
mayyyyyyyyy729 :
Mark 🥹
2026-06-21 10:50:09
0
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