Share this on WhatsApp About four months ago, in December 2019, the interstellar comet known as 2I/Borisov made its closest approach to our sun. After its initial discovery by Crimean amateur astronomer Gennady Borisov in August 2019, astronomers raced to observe the object—only the second known visitor from another star since the asteroidlike ‘Oumuamua in … Continue reading COVID-19 Shutdown May Obscure Mysteries of Cracked Interstellar Comet