Two Asteroids That Could Be As Big As Football Fields To Zip Past Earth
The first of the pair of large space rocks to make a close approach to our planet is an object known as 2021 KC. According to NASA’s Center for Near Earth Object Studies (CNEOS,) the asteroid is estimated to measure somewhere between around 174 feet and 394 feet in diameter. At the upper end of this size estimate, the asteroid would measure about the same length as a football field....