From UFO-like rings and whirlpools of light to rainbow clouds and laser lines, here are 10 strange visual phenomena that can be easily explained by science.
Weird lights appear in the sky way more often than most people realize. Often, photos of these bizarre light shows come with wild speculation about what caused them, from aliens to secret military weapons.
This luminous halo appeared during an intense thunderstorm around 175 miles southeast of Possagno. But forced perspective made the massive ring, which had a diameter of around 225 miles , seemingly hang above the town. Individually, all these phenomena can be relatively common, but seeing them all together at once is extremely rare.
Ethereal whirlpool of light This ethereal whirlpool of blue light appeared in the night sky above Alaska, briefly stealing the limelight from a strong auroral display. But the bizarre, spiral-shaped object had nothing to do with the dancing polar lights. The unusual phenomenon is known as a stable auroral red arc — but despite the name, it is neither an aurora nor particularly stable. Unlike auroras, which appear when solar radiation excites gas molecules in the upper atmosphere, SARs form when atmospheric gas is superheated by Earth's ring current system — a massive loop of electric current that surrounds our planet. Both phenomena become more likely after solar storms weaken Earth's magnetosphere.
The lines, which appeared one after the other, only lasted for around a second. But they inspired online comparisons with"digital rain," or the lines of green computer code that fall vertically down the screen during the"Matrix" movies.
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