Secrets of Earth's 'second moon' revealed
• https://www.dailymail.co, By ELLYN LAPOINTEScientists have discovered the origins of an asteroid the size of a school bus that has been hanging out in the fringes of our orbit for two months.
Scientists have discovered the origins of an asteroid the size of a school bus that has been hanging out in the fringes of our orbit for two months.
