1 ene 1917 año - Adriaan Van Maanen makes the first observation of an exoplanet, then not recognised as such.
Descripción:
Adriaan Van Maanen was a Dutch-American astronomer. Strangely enough, he was known for faulty results due to his device, a stereo blink comparator, using 10-20-year-old plates.
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fecha:
1 ene 1917 año
Ahora mismo
~ 108 years ago
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