Last year, astronomers on the hunt for potentially dangerous near-Earth asteroids spotted something unusual. A space rock, ...
according to NASA's Jet Propulsion Laboratory Center for Near-Earth Object Studies. The moon orbits the Earth at an average distance of 238,900 miles. Stock image of an asteroid passing the Earth ...
Here's how to watch it live this weekend ... the near-Earth asteroid measures an estimated 2.6 miles (4.2 kilometers) wide — roughly the width of Manhattan — according to NASA's Jet Propulsion ...