MV: Just something interesting I found.

http://nihalkhan.blogspot.com/2009/01/rainbowprotection-milky-wayjannah.html

‘Abbas (R) said, “The Milky Way is one of the gates of heaven. The rainbow is security from being destroyed by flood after the people of Noah.” Ibn Kawwa’ asked ‘Ali about the Milky Way. He said, “It is the water-trough (or loop of the bag) from which the heaven opens up flowing water Ibn ‘Abbas (R) said, “The rainbow is security for the people of the earth that they will not be drowned. The Milky Way is the door of the heavens and forms a furrow through it.” The above three ahadith were reported from Imam Bukhari’s book al-Adab al-Mufrad.