asteroid Bennu

An asteroid known as Bennu will pass within half the distance of the Earth to the Moon in the year 2135 but the probability of an impact with our planet in the coming centuries is very slight, scientists said Wednesday. OSIRIS-REx, a NASA spacecraft, spent two years near Bennu, an asteroid that is about 1,650 feet (500 meters) wide, observing its size, shape, mass and composition and monitoring its orbital trajectory around the sun. Using its robotic arm, the spacecraft also collected a sample from the surface of the asteroid that will help researchers determine the future trajectory of Bennu. … Read more