Solar System

Go ahead and forget what you know about the origins of the Earth and moon.
The scientist who stripped Pluto of its planetary status helped discover it.
Mercury, Venus, Saturn, Mars and Jupiter will align for first time in a decade.
Pluto, the moon and Star Trek will be featured in 2016 stamp collections.
Here are eight spectacular things that we learned this year.
These are the sharpest images yet of the dwarf planet.
It might happen in 20 to 40 million years, astronomers say.
It's teaching us a lot about the future of our solar system.
The methods used to find this alien world, which has no host star, could help us to better identify life-sustaining objects in the future.