Encyclopedia for non-astronomers

Here are some brief introductions to some of the exciting stuff that I spend my time on. More will come along the way.

The level is sort of secondary/high-school/early university. There are no equations, unless you click the blue math-buttons. If you have further questions, or if you'd like me to write an article about another topic, you can ask them in my Q&A column, or contact me otherwise.

At the moment, most articles are eithers stubs or rather old and not too well-written, but the ones indicated with a colored icon are quite up-to-date (there are more of those in the Danish version).