A massive asteroid the size of the Empire State Building could hit Earth in 159 years, and NASA scientists will get their first up-close glimpse of a piece of it this weekend. The near-Earth object, ...

New York's Empire State Building is about 1,250 feet tall, while the Eiffel Tower is about 1,060 feet tall. Despite its size, we won't be able to spot 2024 WY70 as it zips past our planet.

NASA said the asteroid was first discovered on Aug. 9, 1994. The asteroid is estimated to be one kilometer (3,451 feet) wide, twice the size of the Empire State Building, which is 1,454 feet wide.

The asteroids, named 447755 (2007 JX2) and (2020 XR), are each estimated at being around the size of the Empire State Building. The NASA-owned JPL says they are likely to be 1,300 feet and 1,200 ...