Submitted by TechnologicalDarkage t3_y7gjky in space
alvinofdiaspar t1_isw4nq7 wrote
Reply to comment by mcpat21 in First known map of night sky found hidden in Medieval parchment by TechnologicalDarkage
Not quite- it is short for High Precision PARallex COllecting Satellite.
mcpat21 t1_isw4pw6 wrote
I was mostly joking, but TIL
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