Curated OER
Comets
What happens when a comet full of 'volatiles' comes to close to the sun? The volatiles ignite, creating a long gaseous tail. Are there differences between meteors and comets? Leading scientists and CG graphics help differentiate the two...
TED-Ed
Where Did Earth's Water Come From?
It's commonly known that over 70 percent of of the earth's surface is covered by water, but exactly where did it all come from? Join this short video as it travels back to the beginning of the universe in search of the origins...