NASA scientist warns there’s no way to stop thousands of city-killing asteroids from striking Earth: ‘It keeps me up at night’
Clip from Article: "...warning that humanity is defenseless against up to 15,000 undetected near-Earth asteroids that have the potential to take out a city.
“What keeps me up at night is the asteroids we don’t know about,” warned Kelly Fast, a planetary defense officer at NASA, while addressing the American Association for the Advancement of Science (AAAS)..."
