Astronomy for Beginners

Here’s where you’ll find observing guides, how-to articles and great astronomy hints and tips. Don’t forget to also check out our comprehensive astronomy dictionary.

Astronomy Dictionary

The chromosphere is the layer of the Sun’s atmosphere above the visible ‘surface’ of the photosphere and beneath the outer tenuous corona. Meaning ‘sphere of colour’, it is the place where dynamic prominences and other similar events occur.


The study of the internal structure of stars by analysis of the way they pulsate.


The optical surface of the Sun. All of the Sun’s visible light that reaches Earth comes from here.

We use cookies to improve your experience of our website. Cookies perform functions like recognising you each time you visit and delivering advertising messages that are relevant to you. Read more here