It has an expansion velocity of around 1000 km/s, and has a lifetime of a few centuries.
* "Salisbury Cathedral, Pitkin guides 2013, ISBN 978-0-85372-931-0== Zunanje povezave ==* Official website*Salisbury Cathedral Stained Glass website*Adrian Fletcher's Paradoxplace – Salisbury Cathedral and Magna Carta Page*Flickr images*Salisbury official tourism website