Anonymous ID: d82d34 Jan. 10, 2021, 1:59 p.m. No.12450716   🗄️.is 🔗kun

On This Day.

>comfy reply tweets

 

U.S. Space Command @US_SpaceCom

#OTD in 1946: The @USArmy #SignalCorps successfully bounced 1st radar waves off the Moon w a modified SCR-271 long-range radar #antenna in an effort named #ProjectDiana. The echo waves took about 2.5 sec to return to Earth. @ArmyCIOG6

11:05 AM · Jan 10, 2021

>https://twitter.com/US_SpaceCom/status/1348299813046136840