What if earth had two moons?

The book by Neil Comins, “What if the Earth Had Two Moons” is a serious work by an accomplished physics and astronomy professor, and author of one of the country’s leading astronomy textbooks (Discovering the Universe). read more

And given our spot in the universe, it's not a huge stretch to speculate about having two moons. After all, Saturn and Jupiter each have more than 50, and even our closest galactic neighbor, Mars, has two [source: NASA]. So, all things considered, maybe Blondie's "The Tide is High" isn't the right theme song for the Earth having two moons. read more

A scale comparison of the Earth, the Moon, and Jupiter's largest moons (the Jovian moons). Image credit:Image Credit: NASA Humans would have to adapt to the challenges of this two-mooned Earth. read more