CNN Early Start With Christine Romans and Laura Jarrett January 18, 2022 10:51:00
Back in 1994, and the reason we're able to know that it hasn't been this close since 1933 is because of the data that we've been able to pick up on this, on this asteroid. it's well established, this orbit. so we know the exact track it's going to go on, and we know that it won't be this close for another 200 years. look at how big this thing is. 5400 feet, that is nearly four times the size of the empire state building. >> wow. >> tyler, thanks for that. all right. let's bring in keith cowling, editor of space raft.com, nasa space biologist. keith, good morning. >> good morning. >> this is ...