Rare 'moonbows' light up night sky across US as blue supermoon rises — and you could still spot...

Extremely rare, vibrant "moonbows" were spotted in the night sky above the U.S. shortly before the rise of the blue supermoon on Monday (Aug. 19).
The moon will remain bright for the next few nights, meaning you still have a chance to see this ethereal phenomenon for yourself, if you're lucky. And we can tell you how.
Moonbows, also known as lunar rainbows, are created in the same way as their solar counterparts, with one obvious difference: they appear when moonlight, rather than sunlight, reflects and refracts off falling raindrops. But they are much rarer because they can only be seen around a full moon, when our planet's natural satellite is at its brightest in the night sky.