Quilotoa@lemmy.ca to Today I Learned (TIL)@lemmy.ca · 1 day agoTIL in the early 1960s, the United States shot 480 000 000 copper needles into spaceen.wikipedia.orgexternal-linkmessage-square17fedilinkarrow-up193arrow-down10
arrow-up193arrow-down1external-linkTIL in the early 1960s, the United States shot 480 000 000 copper needles into spaceen.wikipedia.orgQuilotoa@lemmy.ca to Today I Learned (TIL)@lemmy.ca · 1 day agomessage-square17fedilink
minus-squarexylogx@lemmy.worldlinkfedilinkEnglisharrow-up32·1 day agoThey created an artificial ionosphere and were able to successfully bounce radio comms off it. Totally wild.
They created an artificial ionosphere and were able to successfully bounce radio comms off it. Totally wild.