NASA
Climate Kids: 10 Interesting Things About Earth
Discover 10 interesting things about Earth, including its shape, its seasons, rotation, Ice Ages, the Atacama Desert, gravity, changing sea levels, and the Moon.
Wikimedia
Wikipedia: The Black Hole
This site examines the black hole as an object in astrophysics. Delve into this comprehensive resource that covers this concept from its history, to qualitative physics, the reality of black holes, mathematical physics and more.