NASA basic facts about meteors: http://www.kidsastronomy.com/meteorites.htm
Meteors and Comets
To find the videos I showed in class and more, go to https://www.youtube.com/and search on Russian Meteor.
NASA basic facts about comets: http://www.kidsastronomy.com/comets.html
If you are interested in the topic, search on the internet for additional sites including information about the search for, and possible deflection of objects threatening Earth