Teacher resources and professional development across the curriculum
Teacher professional development and classroom resources across the curriculum
Learner Express: Modules for Teaching and Learning
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Earth's active processes of erosion and plate tectonics help explain why craters on the Earth are less visible than on its nearest neighbor, the Moon. View Video
The various planets are thought to have formed from the solar nebula, the cloud of gas and dust left over from the Sun's formation. View Video
The solar system started to form when clouds of dust and gas collapsed, under the force of gravity, into a flat, spinning disk. View Video
Scientists have proposed that the Moon was formed from a collision in the early solar system. View Video
Why do craters on the Moon have similar shapes? A planetary scientist uses a ball thrown into sand to illustrate the reason. View Video