Shop at Amazon US

Contributions

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.

Represents the closest approach distance for an object in orbit around the Earth.

The Full Moon appears larger in the sky when close to or at perigee (credit:- freestarcharts)

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