Current Asteroid Threat Assessment
No known asteroid larger than 140 meters has a significant chance of hitting Earth in the next 100 years. NASA and other agencies continuously track near-Earth objects and refine their orbits. The focus remains on long-term monitoring rather than immediate danger.
How Agencies Monitor Asteroids
Ground-based telescopes and space missions map asteroid paths and predict future positions. Systems like NASA's Planetary Defense Coordination Office analyze data and update risk tables. When new objects are found, scientists calculate possible trajectories and share results publicly.
What Happens If a Large Asteroid Is Detected
If a future impact becomes plausible, agencies would coordinate global tracking and potential deflection missions. Early detection gives more options for observation or intervention. For current and upcoming decades, the probability of a major impact remains extremely low.
Learn more about planetary defense efforts at NASA Planetary Defense.
