Date: 9/29/2004

This space rock was first sighted back in February 1934 and was then referred to as object 1934 CT. Then astronomers lost track of it. Seventy years later, 4179 Toutatis resurfaced and made its closest contact with us, traveling within 1.5 million km of our planet. That's four lunar distances. Having dodged it once, researchers say the likelihood of a future collision is said to be small.