Earth's second moon will make a close approach to the planet next week before drifting off into space, never to be seen again.
"What second moon," you ask? Astronomers call it 2020 SO – a small object that dropped into Earth's orbit about halfway between our planet and the moon in September 2020.
"... in December 2020, NASA researchers learned that the object isn't a space rock at all, but rather the remains of a 1960s rocket booster involved in the American Surveyor moon missions. "