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ck2yesterday at 12:48 PM3 repliesview on HN

My favorite "lasers at distance" thing will be when amateurs can get a few photons back from the mirrors left on the moon

https://en.wikipedia.org/wiki/Lunar_Laser_Ranging_experiment...

Not quite there yet at the amateur level, private industry soon, but then there is the question of safety to air traffic.

Can you imagine the first moon data link? JWST has 8mbps


Replies

vmh1928yesterday at 2:39 PM

Modulating a laser beam for communications is not new but this distance effort by amateurs doing a two-way voice transmission over 167km in New Zeland is pretty cool. This article also mentions a number of other laser communication long distance efforts.

https://www.modulatedlight.org/Modulated_Light_DX/MODULATED_...

IAmBroomyesterday at 1:20 PM

And the next will be when the amateur data links manage to noticeably heat the mirrors...

show 1 reply
eesmithyesterday at 12:59 PM

People do use radio (though not optical) for Earth-Moon-Earth data links: https://en.wikipedia.org/wiki/Earth%E2%80%93Moon%E2%80%93Ear...