Friday special day

And now for something completely different , oumuamua - comet /meteor , it has a non gravitational orbit, and not a real rocket drive "you see "

ʻOumuamua is a small object estimated to be between 100 and 1,000 metres (330 and 3,280 ft) long, with its width and thickness both estimated to range between 35 and 167 metres (115 and 548 ft).[11] It has a dark red colour, similar to objects in the outer Solar System. Despite its close approach to the Sun, ʻOumuamua showed no signs of having a coma, but did exhibit non-gravitational acceleration

And a comet like 2l/Borisov

This is todays cracking of the code of an old technology.
Mankind evolved a true mind long after the exististence of oumuamua. Mathematics and technology cracked the bci of aforetimes of a master of a perhaps alien world.

But the extraterra forces weren't at least aggressive and didn't nuked us below sea level

Or even before mexico in Cozumel

Or even in china before the ice -ages, in fuxian

But the befeated were left with this technological riddle.

By the way , here the easy riddles, for your noon

The weekly special in a slow but moderate time

my worst hashi puzzle bridges time ever for the hard, but not for the daily special level.