Astronomy: Age 12

9 illustrated Astronomy lessons for Age 12.

When shadows cross in space An eclipse happens when the Sun, Moon and Earth line up and one casts its shadow on another. The Moon's shadow…
Why we have seasons Earth's axis is tilted about 23 degrees and always points the same way as Earth circles the Sun in a year. So …
Looking Back in Time Light needs time to travel across space, so the light from a faraway galaxy left it long ago. The farther away…
Earth's Tilt and Seasons Earth spins on an axis tilted 23.4 degrees. As Earth orbits the Sun, the hemisphere tilted toward the Sun gets…
Moon in Earth's Shadow When the Moon is full, the Sun, Earth, and Moon line up with Earth in the middle. The Moon moves into Earth's …
Stars in a Spiral Galaxy Stars are not spread evenly through space; they gather in huge groups called galaxies. Our galaxy, the Milky W…
Moon Around Earth The Moon travels around Earth, and sunlight always lights one half of it. As the Moon moves, we see different …
Two Ocean Bulges Earth spins once a day. A coastal place moves through two ocean bulges, so it gets two high tides and two low …
Spinning Cloud to Sun and Planets A huge cloud of gas and dust spun in space. Gravity pulled it inward, making a bright center and a flat swirli…