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.

The shadow part that occurs during a partial eclipse and is much lighter that the dark shadow of a full eclipse.

The Penumbra also refers to the outer region of a sunspot group.

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