Green flash at sunset. Flash of light (upper centre) tinged with green and blue rays, seen above the setting Sun (centre). This phenomenon is caused by a temperature inversion above the clouds seen across the Sun. The exact effect and the length of time it is present varies depending on the exact conditions in the atmosphere at the time of viewing. The green flash will be present for longer if mirage conditions are present. A mock-mirage flash results in a thin strip appearing above the upper limb of the Sun, and lasts for 1 or 2 seconds.
Science Photo Library was founded in 1981 by Michael Marten, one of the authors of "Worlds Within Worlds", a book exploring different ways to observe the universe - from electron micrographs, to images of earthrise taken from the Apollo spacecraft. When Marten started receiving requests for the beautiful images in the book, he had an idea of setting up Science Photo Library.
Since then, Science Photo Library has continued to work alongside world acclaimed photographers and the leading science and medical experts to provide a central source of the best science and specialist imagery available. Although the collection started with scientific images, it has grown to encompass all aspects of science and their impact on everyday life.
Shop with Confidence (Fine Art America Return Policy)
Our return policy is very simple:
If you're not happy with a purchase that you made on FineArtAmerica.com, for any reason, you can return it to us within 30 days of the order date. As soon as it arrives, we'll issue a full refund for the entire purchase price. Please note - Fine Art America does not reimburse the outgoing or return shipping charges unless the return is due to a defect in quality.