Seasons Interactive

Everyone knows that it’s warmer in the sumer than in the winter, but why is that? With this interactive, you can examine the main factors which affect temperature: the position of the Earth in its orbit around the Sun, the tilt of the Earth’s axis of rotation, and the path of the Sun in the sky over the course of day. You can look for connections between these factors and the average temperature over the course of a year.

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Moon Phases

Sunlight is responsible for both day and night on Earth and for the different phases of the Moon as seen from Earth.

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Rocket Science 101

Welcome to Rocket Science 101. This application shows the basic parts of the launch vehicle, how they are configured, and how they work together to launch a NASA spacecraft.

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Planet Size Comparison

How large is the Earth compared to Mercury? to Venus? to the sun? Here’s a visual approach for comparing planet sizes.

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Black Holes: Gravity’s Relentless Pull

Black holes are out there. But what are they? The mass of the Earth creates the gravity that pulls things to the ground. With enough power, we can escape that gravity and leave the earth behind.

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