2021 KT1 is expected to come within 4.5 million miles of Earth, a relatively close encounter. It will fly past at around 40,000 miles per hour, according to scientists at NASA’s Jet Propulsion Laboratory.
But don’t worry, there is no chance of the asteroid hitting Earth. Still, researchers track all asteroids that come close to the planet and are currently looking into ways to deflect ones that could make contact in the future.
Six other asteroids, which are basically leftover rocks that are over four billion years old, are also passing by Earth this week. However, they are all smaller than 2021 KT1.
Source: A “potentially hazardous” asteroid the size of a skyscraper is zooming past Earth today – CBS News