What is a comet? | Star Walk Kids

Learn why comets have tails and why they are called "dirty snowballs". Download Star Walk Kids – an educational stargazing app for children 💫 https://starwalkkids.page.link/y2b Follow us on social media: 📘 Facebook:   / starwalkapp   📸 Instagram:   / starwalkapp   🐦 Twitter:   / starwalk   📝 Medium:   / starwalk