An asteroid the size of a 50-story skyscraper will zoom past Earth Sunday (July 17), making its closest approach to our planet in nearly 100 years. The meaty space rock, dubbed 2022 KY4, will safely miss Earth by about 3.8 million miles (6.1 million kilometers), or more than 16 times the average distance between Earth and the moon, according to NASA. This is considerably farther afield than the asteroid 2022 NF, which came within 56,000 miles (90,000 km) — or about 23% the average distance between Earth and the moon — on July 7. Asteroid 2022 KY4 is about 290...