"An object larger than about 150 meters that can approach the Earth to within this distance is termed a potentially hazardous object," NASA wrote.

Meet NASA’s NEO Surveyor, the space telescope identifying hazardous asteroids and comets within 48 million kilometres of Earth’s orbit

NASA has announced that asteroid 2024 TY21, measuring approximately 40 feet wide, will pass Earth safely today at a distance of 840,000 miles. Meanwhile, the Europa Clipper mission is set for an October 14 liftoff to explore Jupiter's moon Europa,

NASA has issued an alert that an asteroid, TP17, is scheduled to skirt by Earth today at a distance of 2.8 million miles. With a diameter of about 170 feet—roughly the size of a commercial airplane—it is one of many thousands of near-Earth objects (NEOs) to fly within a few miles of Earth without threatening our planet.