Category: Space

The Moon may hold much more water than we think

The Moon’s soil, especially in polar regions, could hold substantial amounts of water. © ESA/NASA By Sid PerkinsOct. 26, 2020 , 1:45 PM Scientists have long suspected the Moon holds sizable reserves of water, secreted as ice in the deep cold of permanently shadowed craters near the poles. Two new studies tell us more about …

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The universe teems with weird black holes, gravitational wave hunters find

The orientation of merging black holes’ spins helps reveal how the pair of black holes formed, and physicists have now probed the spin distribution statistically. LIGO/Caltech/MIT/Sonoma State (Aurore Simonnet) By Adrian ChoOct. 28, 2020 , 8:00 PM Less than 5 years ago, physicists rocked the scientific world when they first spotted gravitational waves—fleeting ripples in …

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Famed meteorite reveals early water on Mars—and an early outer space bombardment

Mars suffered an early bombardment before settling in to a prolonged calm, a new meteorite record indicates. Detlev van Ravenswaay/Science Source By Paul VoosenNov. 16, 2020 , 3:00 PM It was a tough fundraising pitch: Martin Bizzarro, a cosmochemist at the University of Copenhagen, needed some $500,000 to buy—and then grind up—material from one of …

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Potential signs of life on Venus are fading as astronomers downgrade their original claims

Signs of phosphine on Venus can’t be easily explained without life. That’s why some astronomers believe the compound isn’t there. NASA/JPL-Caltech By Paul VoosenNov. 17, 2020 , 2:50 PM The announcement in September took the world by storm: Researchers using two radio telescopes found signs that the clouds of Venus were harboring phosphine, a toxic …

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Astronomers say they’ve solved the mystery of the ‘Blue Ring Nebula’

The Blue Ring Nebula, as seen in 2014 by the Galaxy Evolution Explorer, with its enigmatic ultraviolet rings colored blue NASA/JPL-Caltech; M. Seibert/Carnegie Institution for Science; K. Hoadley/Caltech/GALEX Team By Daniel CleryNov. 18, 2020 , 11:00 AM Astronomers believe they have solved the 16-year-old mystery of a star surrounded by an enigmatic ring of ultraviolet …

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China set to bring back first rocks from the Moon in more than 40 years

Chang’e-5 is targeting Mons Rümker, a volcanic mound that may contain 1.3-billion-year-old lava. NASA By Dennis NormileNov. 19, 2020 , 10:50 AM On Earth, deep time is an open book. By measuring trace radioactive compounds in rocks that decay with metronomic regularity, dating experts have learned when oceans opened, volcanoes erupted, and mass extinctions struck. …

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Famed Arecibo telescope, on the brink of collapse, will be dismantled

A second cable break on 7 November tore through the Arecibo telescope’s dish panels and brought the suspended instrument platform to the verge of collapse. Arecibo Observatory/University of Central Florida By Daniel CleryNov. 19, 2020 , 11:30 AM The Arecibo telescope’s long and productive life has come to an end. The National Science Foundation (NSF) …

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To explain away dark matter, gravity would have to be really weird, cosmologists say

The spatial distribution of more than 4 million galaxies as measured by the Sloan Digital Sky Survey, which can’t be easily explained by modifying gravity SDSS (CC-BY) By Adrian ChoNov. 20, 2020 , 11:55 AM Dark matter, the invisible stuff whose gravity is thought to hold galaxies together, may be the least satisfying concept in …

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