Over 33,000 near-Earth asteroids have been detected since 1990

Since the late 20th century, astronomers and space agencies have taken steps to monitor the threat of large asteroids passing near Earth. International initiatives were established to detect, track, and characterize these celestial bodies to safeguard our planet from possible collisions.

As the chart shows, more than 33,000 near-Earth asteroids have been discovered and tracked since 1990. NASA estimates that over 90% of all the near-Earth objects larger than 1 kilometer have already been discovered.

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