Comets are hardly innocent little cosmic snowballs. They average over 6 miles (10 km) in diameter and hurtle through space with incredible speeds, giving them an order of magnitude more destructive power than an asteroid of the same mass.
How to find NEOWISE with your iPhone before the comet disappears for 6,800 years
Have you spotted this comet that’s been making headlines this month? If you’re in the northern hemisphere and want to catch the photogenic comet in the night sky before it disappears, read on as we explain the best way to hunt down NEOWISE with your iPhone.