On this day in 1939 Finnish astronomer Yrjö Väisälä discovered the periodic comet 40P / Väisälä.

2022-02-08

On this day in 1939 Finnish astronomer Yrjö Väisälä discovered the periodic comet 40P / Väisälä.

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Europe

1 comment

bobbycrush says:

2022-02-08 at 21:10

Nice work, Yrjö!

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