Ask Astro: Why do we have meteor showers every year?

Q: Why do we still have meteor showers? If Earth is 4.5 billion years old, then it’s traveled through these meteor fields 4.5 billion times. So why haven’t all the meteors been pulled out of our orbit by now? Dwain Smith Sugar Land, Texas A: Since the moment it coalesced, Earth has had meteor showers. In the young solar system, the region near the Sun was crammed full of large objects that formed when the gravitational attraction among tiny particles brought them together. Meteo

from News https://ift.tt/2Y4r88G