Space

Revolution & Rotation

Orbits 'R' Us (S)

Crash Course Kids: Earth's Rotation & Revolution
(Video in English, but Spanish subtitles available)

Read About Earth's Orbit and Rotation
(Google Translate available)

Seasons

What Causes the Seasons? (S)

Crash Course Kids: Seasons and the Sun
(Video in English, but Spanish subtitles available)

Why Does the Earth Have Seasons?
(Google Translate available)

Sky Views

What are Constellations?
(Google Translate available)

Crash Course Kids: Super Stars (Constellations)
(Video in English, but Spanish subtitles available)

DK Findout: Constellations (GT)

Space - The Final Frontier