NASA | Afterschool Universe: How Light Carries Information

The video tutorial explains how light carries information from objects in the universe to Earth, emphasizing the time it takes for light to travel. An activity is set up with participants representing Earth, other solar system objects, and light rays. The demonstration shows how light rays convey information about actions performed by these objects, highlighting the delay in receiving new information. The activity illustrates the concept of light being generated or reflected, focusing on the most recent source of light.

What role does light play in obtaining information about objects in the universe?

How does the distance of an object affect the time it takes for light to reach Earth?

Describe the setup of the activity involving Earth and other celestial objects.

What happens when the sun performs an action and how does Earth receive that information?

Explain the significance of light rays in the context of this activity and how they relate to the information received by Earth.