PBS
Seasons on Earth and Mars
Winter, spring, summer, and fall—Earth experiences them all! But what about Mars? Scholars compare the planets in terms of distance, tilt, and rotation during a lesson from PBS's Space series. Great visual models of Earth and Mars, plus...
Curated OER
Science Kids: Science Images: Research in Space
This photo shows an astronaut researching in the zero gravity environment of space.
Curated OER
Science Kids: Science Images: Eye Tracking Device
An astronaut experiments in gravity free space with an eye tracking device. The complicated equipment rests on the astronauts head as he floats around the shuttle.