What is a blue moon and when will the next one occur? | Royal ...
The traditional definition of a blue moon: seasonal Which of the 13 full moons is the blue moon is up for debate. Traditionally the definition of a blue moon is the third full Moon in an …
Everything you've ever wanted to know about the Moon
A blue moon, by folklore definition, is said to be the second full Moon of the month. However, researchers at Southwest Texas State University have been using historical documents to …
What are the names of full moons throughout the year?
Blue moons, Harvest moons, Worm moons? Find out more about the ancient names associated with the phases of the Moon - and what they mean.
Why is the sky blue? | Royal Observatory
Violet and blue light have the shortest wavelengths and red light has the longest. Therefore, blue light is scattered more than red light and the sky appears blue during the day. When the Sun is …
Lunar eclipse guide: When and where to see in the UK
What is a lunar eclipse? An eclipse of the Moon occurs when the Earth lies directly between the Sun and the Moon, and the Moon lies in the shadow of the Earth.
When Is The Next full Moon? Full Moon Calendar 2026
The last full Moon was on 4 December 2025. The next full Moon is on 3 January 2026 at 10.03am in the UK. January's full Moon is popularly known as the 'Wolf Moon'. Check the calendar …
Interesting facts about the Moon - Royal Museums Greenwich
Astronomy Photographer of the Year photographers share their top facts about the Moon. To see amazing photographs of the Moon and our solar system, visit the exhibition now. 1. The Moon …
Night Sky Highlights - September 2025 - Royal Museums Greenwich
Aug 15, 2025 · Explore what you can see in the night sky this September, including a total lunar eclipse, the Moon passing in front of Venus, and more!
NASA's Artemis Moon Missions: all you need to know
NASA's Artemis missions aim to land the first woman and person of colour on the Moon, create a lunar base, and lay the groundwork for a future trip to Mars!
What is a supermoon and what causes a supermoon? | Royal …
What is a supermoon? The distance between the Moon and the Earth varies, because the Earth is not right at the centre of the Moon’s orbit and the Moon’s orbit is not a circle (it’s an ellipse). …