Know Your World: Space

What do you know about space?

Outer space is a zone that occurs about 100 kilometers (60 miles) above the planet, where there is no appreciable air to breathe or to scatter light. In that area, blue gives way to black because oxygen molecules are not in enough abundance to make the sky blue.
Inside you will find lots of information from Wiki about space, stars, planets, galaxies, dwarfs, black hole, big bang and etc. Tons of photos and space news.

Don't stop learning something new. Extend your knowledge. Know your world!