Nasa photographer John Grant has captured a strange sight above the Marshall Islands in the Pacific. <\/p>\n
The odd blue clouds look like a unique aurora hanging in the sky - and at first glance it's easy to think it could be evidence of a UFO, or some other strange phenomenon. <\/p>\n
Fortunately for our sense of reality, it's neither of those things. <\/p>\n<\/p>\n
In fact the picture was taken shortly after the launch of two sounding rockets launched from Roi Namur on 7 May. <\/p>\n
The rockets are part of an attempt to study how winds and electrical activity works in the upper atmosphere. <\/p>\n
The white-blue cloud was made by the release of trimethyl aluminium, while the red cloud above it was made by lithium vapour. <\/p>\n
These chemicals were released intentionally to help study how the winds in the ionosphere - known as neutral winds - work. <\/p>\n
Universe Today has more details on the experiment - but some of the other best clouds captured by Nasa's cameras are copied below. <\/p>\n
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The rest is here: <\/p>\n
PICS: Nasa Captures Strange 'Blue Clouds' Above The Marshall Islands<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" Nasa photographer John Grant has captured a strange sight above the Marshall Islands in the Pacific. The odd blue clouds look like a unique aurora hanging in the sky - and at first glance it's easy to think it could be evidence of a UFO, or some other strange phenomenon. Fortunately for our sense of reality, it's neither of those things. Continue reading