Before that, this year’s final asteroid, 2020 YB4, measuring just 36 meters in diameter or roughly half the wingspan of a 747, passed by the Earth shortly after 6am UTC at a distance of 6.1 million kilometers. That means, in terms of the threat posed by space rocks at least, …
Read More »Rocky start: 2021 will begin with unwelcome, 220-meter wide asteroid visitor, NASA warns
