Comets often streak across the night sky. They are fascinating flashes of light, but how much do we really know about them? Here are some things that scientists do know.Find out:What the name comet means.How comets are named.When the earliest comets were recorded.How scientists predict when a comet will return.What a comet's tail is made of.The Educational Version has activities that meet Common Core Curriculum Standards.LearningIsland.com believes in the value of children practicing reading for 15 minutes every day. Our 15-Minute Books give children lots of fun, exciting choices to read, from classic stories, to mysteries, to books of knowledge. Many books are appropriate for hi-lo readers. Open the world of reading to a child by having them read for 15 minutes a day.