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Fluorescent glow can reveal hidden life in the cosmos

Illustration by Wendy Kenigsberg / Matt Fondeur / Cornell University Astronomers have discovered a new way of finding life in the cosmos. Strong UV rays from red suns, which would once destroy life on the surface of planets, could help uncover hidden biospheres. Their radiation, according to a recent study by Cornell University, could trigger a protective glow of life …

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Uranus' rings have a 'warm' glow and astronomers are not sure why

Astronomers have uncovered that Uranus' rings have a "warm" glow to them, a trait that's befuddling them. The images, published by the University of California Berkeley and taken by the Atacama Large Millimeter / submillimeter Array (ALMA ) and the Very Large Telescope (VLT), show the paint of dust-sized particles in the rings, aiding their ability to reflect light, making …

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A mysterious glow warms Uranus rings

A kind of heat wave heats the rings of Uranus although the planet orbits far from the Sun. New thermal images of the planet, taken with two telescopes in Chile reveal for the first time the temperature of the rings: minus 195 degrees Celsius or the boiling point of liquid nitrogen. While this may sound cold by terrestrial standards, keep …

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Astronomers see "warm" glow from Uranus rings

Image: Near-infrared image of the Uranus ring system, taken with the Adaptive Optics system on the 10 m Keck telescope in July 2004. This image was taken at a wavelength of 2.2 microns and shows the main picture. .. view more Credit: Imke de Pater, Seran Gibbard and Heidi Hammel, Icarus 180, 186-200 (2006) The rings of Uranus are invisible …

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Astronomers see 'warm' glow of Uranus's rings

Composite image of Uranus's atmosphere and rings at radio wavelengths, taken with the ALMA array in December 2017. The image shows thermal emission, or heat, from the rings of Uranus for the first time, the availability of scientists to determine their temperature: a frigid 77 Kelvin (-320 F). Uranus's atmosphere at these wavelengths shows the presence of molecules that absorb …

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The smallest pixels ever created could make color-changing buildings glow

eNPoMs consisting of gold nanoparticles (Au NPs) encapsulated in a conductive polymer shell. Picture credits: NanoPhotonics Cambridge / Hyeon-Ho Jeong, Jialong Peng The smallest pixels ever created – millions of times smaller than those in smartphones created by trapping light particles under tiny gold stones – could be used for new types of flexible large-screen displays large enough to house …

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How did this little star make such a big glow?

The impression of an artist super on a L-dwarf. Records – of a seemingly tiny, almost Jupiter-sized star. The Next Generation Transit Survey (NGTS), a celestial survey telescope in Chile, first discovered the torch on August 13, 2017. Not only It's the second largest torch observed, coming from a L-dwarf star, but this is the coolest star ever to show …

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Small orange pumpkin frogs have bones that glow through their skin

This is a pumpkin toad ( Brachycephalus ephippium ) under natural light (left) and ultraviolet light (right). 19659003] Photo credits: Sandra Goutte / NYU Abu Dhabi In the Atlantic Forest of eastern Brazil, poisonous "pumpkin toads" use their vivacious colors to fend off predators. However, these tiny frogs also emit a secret visual signal: they shine light blue under ultraviolet …

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Found another star with a mysterious glow

In 2012 it was found that the brightness of this object is reduced by 95%. Scientists have found a new star whose brightness changes in an unusual way. The most famous object is the so-called "Star Tabby", in which astronomers explained the various hypotheses up to the astroengineering structures of the aliens. The results will be published on the preprint …

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The faint glow of cosmic hydrogen

Deep observations with the MUSE spectrograph at the ESO's Very Large Telescope have discovered huge cosmic reservoirs of atomic hydrogen surrounding distant galaxies. The excellent sensitivity of MUSE allowed direct observations of faint hydrogen clouds glowing in the early universe with Lyman alpha emission – showing that almost the entire night sky is invisibly glowing. Credit: ESA / Hubble & …

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