This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American The Moon has been a point of fascination in ...

Over 4.2 billion years ago, the moon turned itself inside out to create the lunar surface that has become familiar to humanity. Most scientists would agree the moon was created around 4.5 billion ...

To our best of our understanding, the Moon formed from Earth following a colossal impact. A Mars-sized world we nicknamed Theia slammed and merged with the primordial Earth, throwing material into ...

The Moon formed a little later than previously assumed. When a Mars-sized protoplanet was destroyed in a collision with the young Earth, a new body was created from the debris ejected during this ...

Cast your mind back to when Earth was a baby. The solar system was a brutal nursery. Giant fragments of rock whirled chaotically around a fiery young sun, regularly bombarding infant planets. Earth ...

An interdisciplinary international research team has recently discovered that a massive anomaly deep within the Earth’s interior may be a remnant of the collision about 4.5 billion years ago that ...

Learn more about the time when the moon didn’t exist, and then hours later suddenly did. Einstein once asked whether “the moon exists only when I look at it?". It was rhetorical objection to the idea ...

While the moon’s surface is battered by millions of craters, it also has over 200 holes – steep-walled pits that in some cases might lead to caves that future astronauts could explore and use for ...

Our moon has been our constant companion for billions of years. But we're still not sure how it came to be, though scientists have a few theories. The most outlandish theory, in which an alien planet ...