This is a Fire Rainbow, one of the rarest weather phenomenon on Earth. In order for this effect to be achieved the clouds have to be Cirrus and 2kms high, and there must be a sufficient density of ice crystals in the air in order to refract and reflect the sunlight. The crystals need to be fairly large and plate-shaped. The sunlight then needs to strike the crystals at exactly 58 degrees, and voila! One of the most beautiful things I’ve never seen. This gorgeous optical phenomenon is also known as a Circumhorizontal arc or ice-halo. Variations of the phenomenon include the Infralateral arc and the Supralateral arc.
- tumblr.com/search/anne+bi… Anne Birgitte Fyhn's Aurora Borealis photos, most taken in Tromsø Norway, are on Tumblr. http://t.co/z02kuUHzaF 23 hours ago
- I was able to see this monster sunspot on my way to work this morning thanks to cloud cover & a tinted windshield. spaceweather.com 23 hours ago
- bit.ly/1oqOXzp The space station is getting a UPS-style shipping service. 1 day ago
- youtube.com/watch?v=fJ9prh… Puppy Justice. John Oliver presents a way of making the Supreme Court fit for TV viewing. 1 day ago
- For once I'm not left appalled by News24 commentators. RT @News24: "I’m giving up Anti-Retrovirals for homeopathy" voices.news24.com/trevor-kleinha… 1 day ago
Keep an eye on:Free Society Institute South Africa. A non-profit society encouraging skepticism and secularism in South Africa.
Astronomy picture of the day archive by NASA. This is one of my all-time favourite sites. I visit it every single day & so should you.
Bad Astronomer Phil Plait blogs at Slate.
Astronomy Education is a compilation of direct links to homepages of different astronomy and space websites.