Mushroom cloud and the Sun

[Ridley]

The following did not occur in a dream while sleeping.  I was resting with my eyes closed and I was very relaxed.  This is more of a vision with eyes closed.  I saw what could be described to look a bit like cards or Polaroid images.  This all occurred much like a visual presentation with the 'photos' moving into place before my mind's eye so to speak.  The first image was of the number '7' in front of one of the image cards. Then one of the photos showed a large mushroom shaped cloud.  Then this one moved away and another took its place.  This one had the image of a bright ball of orange light which I consider to be the sun.  It also had a few clouds slightly blocking the brightness.  Then there were 3 more images similar to the one of the sun but slightly different patterns of clouds or blocking.  That is pretty much it for what I saw.  
I am posting this mainly because it was an unusual 'presentation' for me.  Maybe I'll dream more.  But seeing a mushroom cloud is disturbing because of its association with atomic/nuclear explosives. All of the imagery felt important.  Does 7 represent time? Sun...the rising sun? Why 4 images of the sun?