but a 2% chance of an asteroid strike is "uncommon," Davide Farnocchia, a navigation engineer with NASA's Jet Propulsion Laboratory, told ABC News. "Getting something with a probability this high ...

Scientists simulated what would happen if a medium-size asteroid were to strike Earth. One of those space rocks, asteroid ...

If the asteroid does hit the planet, NASA said its potential impact sites could include areas over the eastern Pacific Ocean, northern South America, the Atlantic Ocean, Africa, the Arabian Sea and ...

plant photosynthesis would decrease by between 20 and 30 percent and the planet's ozone layer would deplete by 32 percent. This undated image made available by NASA shows the asteroid Bennu from ...