How Scientists Track Asteroids and Protect Earth

Tracking asteroids involves radar, optical telescopes, and space missions.

Radar Tracking

1. Scientists use radar to measure the distance and speed of an asteroid. This helps predict its path accurately.

Optical Telescopes

1. Large telescopes like those at NASA's NEOWISE mission help identify asteroids by their reflected light.

Space Missions for Defense

1. Deflection missions, such as the DART (Double Asteroid Redirection Test), use kinetic impactors to alter an asteroid's trajectory.

Pro tip: Early detection is key. NASA and other space agencies continuously monitor potential threats.