Asteroid detection involves identifying and tracking asteroids that could potentially collide with Earth. Scientists use telescopes and radar systems to observe these space rocks, measuring their size, shape, and trajectory. This information helps assess any potential threat they may pose. Various organizations, such as NASA and the European Space Agency, are dedicated to monitoring near-Earth objects (NEOs). They employ advanced technology and collaborate internationally to share data, ensuring that any hazardous asteroids are detected early enough for possible deflection or mitigation strategies.