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'We do not understand how it can exist': Astronomers baffled by 'almost invisible' dwarf galaxy that upends a dark matter theoryAstronomers have discovered a super diffuse dwarf galaxy, named Nube, which gives off barely any visible light and seemingly defies explanation.
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Extremely rare 'rainbow clouds' light up Arctic skies for 3 days in a rowIn and around the Arctic Circle, stunning multicolor clouds have been shining in the sky for days on end. It is very unusual to see so many of these vibrant clouds over such a long period.
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Ethereal halo of light around full moon spotted during recent SpaceX rocket launchAn eerily-prefect ring of light was spotted around the full moon in Florida during the recent launch of a SpaceX Falcon 9 rocket, creating a stunning new photo.
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SpaceX rockets keep tearing blood-red 'atmospheric holes' in the sky, and scientists are concernedAstronomers have discovered a new type of "aurora" created by falling SpaceX rocket boosters that punch temporary holes in the ionosphere. Experts are concerned that these blood-red light shows could be causing unknown problems for astronomy and communication.
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Watch a super-rare dreamer anglerfish with ultra-black 'invisibility cloak' swim like a shadow in the deep seaMBARI researchers came across a rarely seen dreamer anglerfish off California's coast. Video footage of the alien-looking fish only shows its silhouette because its skin is so dark it absorbs almost all of the light that hits it.
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Why is the sky blue?The sky's blueness isn't from reflecting the water. Instead, its color has to do with scattered light.
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Solar storm causes 'impossible,' pumpkin-colored auroras to fill the skyA striking new image shows bright orange auroras dancing in the night sky above Canada. But auroras should never be this color, so what's going on?
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World's largest gravitational wave observatory squeezes light beyond the 'quantum limit'Researchers at the LIGO gravitational wave observatory used a new technique called frequency-dependent squeezing to boost weak signals above quantum noise.
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Stunningly perfect 'Einstein ring' snapped by James Webb telescope is most distant gravitationally lensed object ever seenThe James Webb Space Telescope has snapped a stunning image of a perfectly formed Einstein ring, which is also the most distant gravitationally lensed object ever detected.
