Students complete a unit of lessons on our solar system, its stars, and astronomers. They record information in a space journal, design constellations, define key vocabulary, observe the phases of the moon, and create a group planet...

Students explore the main concepts of astronomy through the eleven lessons of this unit. The past, present, and future methods of studying the science are examined in this unit.

Learn about the Earth's revolution and rotation in this module.

Why do some regions experience full-time heat while others are reckoning with frigid temperatures and snow? And why are the seasons reversed in the two hemispheres? Rebecca Kaplan explains how the shape of the Earth's orbit around the...

Michael Stevens of Vsauce looks at what would happen if the Earth stopped spinning. He also explores how we construct time as a function of the Earth's rotation and why atomic clocks are so precise. [9:44]

A video and a short multiple-choice quiz on how the Earth's tilt on its axis, its rotation, and its orbit around the Sun give us a 24-hour day, a 365-day year, and our seasons.

[Free Registration/Login may be required to access all resource tools.] How the Earth rotates around its axis.

[Free Registration/Login may be required to access all resource tools.] How the Earth rotates around its axis.

This module explores day and night. Learn about what we see during the day and night and why we see what we see.

[Free Registration/Login may be required to access all resource tools.] Discusses the motion of the Earth with its day and night cycle, the seasons, the Earth's orbit around the Sun, and its year-long cycle.

The popular television show, Game of Thrones, and the novel series it is based on, A Song of Fire and Ice, take place in another world. Joe Hanson explores possible scientific explanations of the phenomena exhibited on the show. [8:01]

A slideshow and a short multiple-choice quiz on the topic of seasons and how they are caused by the Earth's rotation and orbit.

Why is the spinning motion so special? Brian Jones details the dizzyingly wide array of ways that spinning affects our lives. [3:57]