Simulations

Fly around a real 3D Moon, then stand on Earth and look up. The phase is which part of the lit half faces you.

Run the real Sun and Moon from 2000 to 2050. Most new and full moons miss: find the ones that line up, and see each shadow to scale.

You are a photon of sunlight. Aim at Earth, warm the ground, then try to get back out to space as infrared.

Venus is almost twice as far from the Sun as Mercury. Which one is hotter? Change each planet's greenhouse gas and find out.

Fly Earth around the Sun, then stand anywhere on it. Seasons come from the tilt, not from how close we are to the Sun.

Be a carbon atom. Fly an island as carbon dioxide, slip into a leaf and become sugar, then choose: burned for energy, grown into wood, fallen and rotted, or eaten by a cow.