Pan-STARRS 1
NASA: Interstellar 'object' Oumuamua really was a small rock, rather than a Vogon constructor fleet
Spitzer Space Telescope could not spot Oumuamua, suggesting that it is actually pretty small
Interstellar object 'Oumuamua' could be an alien probe, claims Harvard study
Oumuamua was first spotted in October 2017 by the Pan-STARRS 1 telescope in Hawaii