SciShow
The Zombie Planet at the Center of the Earth
For years, geologists have been searching for an explanation for two strange blobs of Earth's mantle that are denser than the rest. It turns out, they may not be original parts of Earth at all.
SciShow
Where Did the Moon Come From?
SciShow Space takes you to the moon! Learn about the competing theories about how Earth's closest neighbor formed.
Be Smart
Apollo’s Most Important Discovery (Inside NASA’s Moon Rock Vault!)
Fifty years ago, we sent the first astronauts to walk on the moon’s face. But what they brought back is just as important as what got them there. I’m talking about moon rocks, guys. And I got to go visit NASA’s lunar sample vault to...
Curated Video
Life Without the Moon
The Moon holds Earth in place and dictates our seasons. What happens to planets without a moon like ours? Physics - Our Solar System - Learning Points. The Moon formed after Earth collided with its twin, Theia. In proportion to the size...
Curated Video
Earth's Twin
Billions of years ago, Earth collided with its twin planet Theia. The impact and resulting geophysical changes prepared Earth for complex life. Physics - Our Solar System - Learning Points. 4 billion years ago Earth had a twin called...
AllTime 10s
10 Unsolved Mysteries Of The Moon
Despite being less than 400,000km away, there is a surprising amount that we don't know about the moon. What's at its core? How did it get there? Could it one day support life? Alltime 10s investigates.
Professor Dave Explains
History of the Earth Part 1: Hadean, Archean, and Proterozoic Eons
If we are going to learn about the Earth, we had better start from the beginning! The Hadean, Archean, and Proterozoic eons will take us all the way from the formation of the Earth, 4.6 billion years ago, until about half a billion years...
Next Animation Studio
Earth’s strange blobs could be huge pieces of alien planet
Many scientists believe that the Moon formed when a Mars-sized planet, called Theia, struck Earth around 4.5 billion years ago.
Next Animation Studio
New study finds more support for Giant Impact Theory of Moon’s formation
Scientists say they’ve discovered differences between Earth rocks and moon rocks that support the theory that Earth was struck by another planet to form the moon.
Next Animation Studio
The moon was formed when Earth collided with Theia twice, not once
Scientists have revised an earlier theory about how the moon was formed via a single, slow collision between Earth and Mars-sized planet Theia, adding a second collision.