If you like the website and want to contribute to the running costs then please do so below. All contributions are most welcome.

PayPal - The safer, easier way to pay online.

A pair of stars that appear close together in the sky but are not physically related. They are often at very different distances from Earth and therefore purely a line of sight arrangement.

Glossary A B C D E F G H I J K L M N O P Q R S T U V W X Y Z