HOW’S THAT SPACE PROGRAM COMING ALONG: The biggest asteroid to visit Earth in 2021 zooms by our planet unusually fast today. Luckily it’s just a drive-by visit, and it isn’t coming to stay. “The asteroid takes more than two years (810 days to be exact) to complete one orbit and won’t pose an impact risk to the Earth for centuries, despite 2001 FO32’s classification as a “potentially dangerous asteroid,” NASA said.”