TOPIC
asteroid
Watch: NASA executes Armageddon-style experiment, crashes DART spacecraft on asteroid Dimorphos
NASA's DART spacecraft hit asteroid as an experiment to determine defense system capabilities against life-threatening asteroid in the future.
Huge asteroid as wide as the length of Golden Gate Bridge and three smaller asteroids to fly by Earth in early January
NASA revealed that the asteroid which will fly past Earth on Jan 3 is as wide as the length of the world's longest main suspension bridge
