And while a few million miles sounds like a lot of room, it's actually a pretty close pass when you're talking about the vastness of space. Other asteroids have passed closer to Earth than Florence, but few have been this big.
A learning opportunity
This flyby will be the closest Florence has come to Earth since 1890 and the closest it will be until after 2500.
The asteroid that poses a threat
A rock star and space rocks
May's co-founders include astronaut Rusty Schweickart, film director Grigorij Richters, and Danica Remy, chief operations officer of the B612 Foundation, a nonprofit to protect Earth from asteroids through early detection. The United Nations has sanctioned it as a