Near-Earth Objects (NEOs) are asteroids and comets that have orbits that bring them close to Earth's orbit. These objects pose a potential threat to Earth as they have the potential to collide with our planet, causing catastrophic damage. Research in this area focuses on identifying, tracking, and characterizing NEOs to better understand their compositions, trajectories, and potential impact threats. Scientists also study ways to deflect or mitigate the risk of a potential collision with a NEO. Overall, research on near-Earth objects is important for planetary defense and for protecting the Earth from potential impact events.