2I/Borisov was discovered in 2019 by Ukrainian astrophysicist Gennady Borisov at the MARGO Observatory in Crimea and is only the second interstellar object detected in our planetary system.

The second interstellar object, 2I/Borisov, stood out because it entered the inner solar system from well above the orbital plane. But while we have only discovered two alien visitors so far ...

The visits of interstellar comets 'Oumuamua' in 2017 and '2I/Borisov' in 2019 proved the existence of such interstellar celestial bodies, according to The Independent. 'Oumuamua was the first ...