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How did the moon form? The leading theory is that the Moon resulted from a glancing collision between the young Earth and an object the size of Mars. The above image series is based on several mathematical simulations of the Moon’s origin:

The Moon’s history begins with a collision between a young Earth (larger object) and a Mars-sized planet.

10 minutes: The now-molten mantle layers (gray) of the two planets are mixing together.

1 hour: The iron cores (orange) are melding together – Most of this iron will remain with Earth.

2 hours: Parts of the mantle are spinning off into a swarm of debris.

22 hours: Pieces of debris revolve around Earth, slowly gathering together.

1 week: The growing Moon’s gravity pulls in the remaining debris.

Learn more about Moon rocks and craters.

It is known that there are an infinite number of blogs, simply because there is an infinite amount of space for them to be in. However, not every one of them is active. Therefore, there must be a finite number of active blogs. Any finite number divided by infinity is as near to nothing as makes no odds, so the average population of all the blogs on Tumblr can be said to be zero. From this it follows that the population of the whole of Tumblr is also zero, and that any people you may meet from time to time are merely the products of a deranged imagination.
(via a-hitchhikers-guide-to)
It is said that its birth was marked by earthquakes, tidal waves, tornadoes, firestorms, the explosion of three neighbouring stars, and, shortly afterwards, by the issuing of over six and three quarter million writs for damages from all of the major providers in the network sector. However, the only site by which this is shared is Tumblr itself, and there are several possible theories to explain this.
(via a-hitchhikers-guide-to)
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