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Jaw-dropping northern lights from massive solar flares amaze skywatchers around the world. 'We have a very rare event on our hands.' (photos)
Watch 4 solar flares erupt from the sun at nearly the same time in extremely rare event (video)
A Rare Event Gave This Algae an Organelle That Traps And Uses Nitrogen
Near-simultaneous solar flares explode from opposite sides of the sun in extremely rare event
Rare Event: Two Cicada Broods Emerge Together For First Time in 221 Years
