The asteroid is up to five times the size of the space rock that exploded over Chelyabinsk in 2013.
You might be able to catch a glimpse from your own backyard.
It will approach our planet at about four miles per second.
But don't worry, NASA says it has zero chance of colliding with Earth.
This giant asteroid is set to come a bit too close for comfort in mid-December.
International asteroid warning network to be put to the test by 50ft-wide asteroid.
NASA is using the opportunity to test out its planetary defense systems.
Paul Chodas from NASA’s CNEOS says the exercise will be the same as if the asteroid were on course to hit Earth.
Florence is three miles wide and will pass at a distance of over 145 million miles.
A house-sized asteroid will pass by Earth at a distance of as little as 4,200 miles in October.
A newly discovered branch of the Taurids meteor stream increases the risk to Earth but is a “lottery,” scientists say.
Newly discovered crater in the Falklands may correspond with the Great Dying event 250 million years ago.