Welcome, in this online Astronomical Dictionary we will try to define a wide range of astronomical words in the simplest way possible.

This is by no means a comprehensive tome of astronomical terms however it should provide some assistance to novices in particular.

It organised as a blog and set out in categories. So if you want to find out what something means in regards to a planet, go to the solar system category, something to do with galaxies would be found in the deep space category and so on.

The posts in each category are set out in alphabetical order.

Alternatively, just use the search box.