Mysterious Rainbow Cloud.

[the_great_she_elephant]

http://www.sciencealert.com.au/news/20140511-26457.html

OMG! What are THEY hiding from us this time? In here, quick, with your favourite conspiracy theory.

[j*oono]

Paints, what do you make of the Aurora Australis and mammatus clouds etc?

Mammatus clouds are the best.  The first time I saw a really good example was just after the tsunami in 2004.  It was on the 27th of December, my nieces birthday and I was at her party.  I took a great photo but I lost it after a computer crash.

I do think that these really strange cloud formations are formed by a number of natural occurances. 

[fourandsixpants]