The Earth will bring not just one but two visitors from space this weekend.
Astronomers expect an asteroid known as the 1999 KW4 to drop by around 19:05 on Earth. ET on Saturday – and if so, it will bring its own moon.
"It's probably one of the closest binary flybys in recent history," planet scientist Vishnu Reddy told NBC News . "That makes it a very interesting destination."
Asteroid 1999 KW4 is 1.5 kilometers wide. This is about three times the size of the moon, which is about 0.5 kilometers wide. Do not worry about them crashing into the earth. In fact, they do not even come so close that they can be seen with the naked eye.
Nevertheless, the pair will not be so close to Earth until 2036. So if you want to catch a glimpse of the dynamic duo, make sure you have your telescope ready on Saturday night.
READ MORE: Mileside asteroid and its tiny moon race across the earth this weekend [ NBC News ]
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