Moon in Earth’s Shadow
Age 12 · Astronomy
When the Moon is full, the Sun, Earth, and Moon line up with Earth in the middle. The Moon moves into Earth’s shadow and glows red.
This picture is part of the full library
Every lesson is open to everyone for 7 days after it is published. This one came out on October 15, 2026: its text stays readable here, and its picture opens with a subscription.
The app is free. A subscription opens every lesson, in every school year.
In the picture
- The Sun: the bright source of light
- Earth: the planet casting the shadow
- Earth’s shadow: the dark cone that the Moon enters
- The Moon: the body glowing coppery red inside the shadow
- The orange-red ring around Earth: sunlight bent through Earth’s air
Examples
- A red sunset, where sunlight bends through the air
- A flashlight blocked by a ball, making a dark shadow
Key takeaways
- A lunar eclipse happens only when the Moon is full and Earth blocks sunlight from reaching it
- The red colour comes from sunlight bent and filtered through Earth’s atmosphere
Quiz: Moon in Earth’s Shadow (Age 12)
-
When can a lunar eclipse happen?
-
Why does the Moon glow red during a lunar eclipse?
-
What does the Moon move into during a lunar eclipse?
The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.
Free app, optional subscription
App Store Google Play
Carry on in the app
At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.
Your child’s teacher does not use My Enhanced Teacher yet?
Tell them about it