Asteroid Heading Towards Earth 2024 Today.  — asteroid apophis, once considered a potential threat to earth, is now ruled out as a hazard for at least a century, according to radar and orbit analysis. Learn how nasa monitors and assesses the orbits and impact risks of asteroids and comets that approach earth.

 — imagine if scientists discovered a giant asteroid with a 72% chance of hitting the earth in about 14 years — a space rock so big that it could not only take out a city. The surprise discovery of asteroid 2024 rw1, mere hours before it hit earth harmlessly this week, may have you wondering whether we are.