How a Harvard professor became the world’s leading alien hunter
12
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Harvard astrophysicist says 2017 interstellar object sighting was humanity’s first contact with an artifact of extraterrestrial intelligence
12 votes -
Our first interstellar visitor, 'Oumuamua, is still a mystery. Despite some speculation, it's not a spaceship... but it might be a three-dimensional fractal snowflake.
9 votes -
The great silence
6 votes -
Interstellar object may have been alien probe, Harvard paper argues, but experts are skeptical
23 votes -
Oumuamua thin films and lightsails
4 votes