Doomed Cassini Spacecraft Reveals Saturn's Rings Cast a Shadow, Blocking Sun's Ultraviolet Radiation

 

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Data collected by the Cassini spacecraft, before it was deliberately crashed into Saturn's atmosphere in September 2017, show that the planet's illustrious rings are casting a shadow in ionized particles over the planet.

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Today's Top Space Headline --"Alien Probe or Galactic Driftwood? SETI Tunes In to 'Oumuamua'"

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In a breathtaking followup to the mid-October discovery of our first detection of a strange 800 meters long by 80 wide interstellar visitor, the world's scientific community is initiating a probe to see if it's an ancient shard of an extinct planet or an alien technology reminiscent of the 20010 Space Odyssey monolith.

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"Carl Sagan's Paradox" --Cool Faint Young Sun, Hot Planet Incubating Life

 
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"We really had an eye to future use with exoplanets for a reason," said Chris Reinhard, assistant professor in Georgia Tech's School of Earth and Atmospheric Sciences. "It's possible that the atmospheric methane models that we are exploring for the early Earth represent conditions common to biospheres throughout our galaxy because they don't require such an advanced stage of evolution like we have here on Earth now."

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"Wiping the Slate Clean" --Signals That Earth is Approaching Pre-Permian Extinction Levels 252-Million Years Ago

 

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"If we want to know how Earth's systems work, what's expected and what's normal, we need to look to the past," and the fossil record is the best measure of ecosystem stability. As we already begin to face extinctions and carbon levels similar to those before the Permian extinction, examining these patterns over time gives us the evidence we need to measure and minimize our impact on climate, preventing further permanent damage to our planet's ecosystems and animals.

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Today's "Planet Earth Report" --Interstellar Space Rock or Alien Probe?, Octopus' Alien DNA, New Physics 'Holy Grail' Particle

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December 11, 2017: Today's links to headline stories from around the world on the threats, opportunities, and dangers facing our fragile planet --along with an occasional dash of humor, popular culture, and an intriguing conspiracy theory or two.  Coverage includes the Planet 9 Enigma, the New Testament as Tao, Volcanoes of New England, the Longest-Living Vertebrate on Earth, Sidewalk Robots of San Francisco, and  Greenland's Monster Heat Wave.

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Behemoth the Size of 800 Million Suns--"Discovery a Clue to How Black Holes Grew So Big So Fast In the Early Universe"

 
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Astronomers have profound questions about the first billion years of the universe: what burned off the fog of the cosmic dark ages? Was it the formation of stars or supermassive black holes, or both? And how did those black holes grow so big in so little time?

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The Alien Observatory: Earth-Sized Planets Orbiting Ultra-Cool Jupiter-Sized Stars --"New Hotspots in the Search for Life" (VIDEO)

 

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“Systems around these tiny stars are the only places where we can detect life on an Earth-sized exoplanet with our current technology,” said the paper’s lead author Michaël Gillon, from the University of Liège in Belgium. “So if we want to find life elsewhere in the Universe, this is where we should start to look.”

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Kepler Mission's "Big Alien-Planet Discovery" via Google AI --Live-Streamed This Coming Thursday on NASA TV

 

 

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"The discovery was made by researchers using machine learning from Google," NASA officials revealed in a media advisory. "Machine learning is an approach to artificial intelligence, and demonstrates new ways of analyzing Kepler data."

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The Weekend "Planet Earth Report" --Google's CIA Origins, Hubble's 'Time-Machine' Successor, Destructive Bitcoin Behemoth

 

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December 9, 2017: Today's links to headline stories from around the world on the threats, opportunities, and dangers facing our fragile planet --along with an occasional dash of humor, popular culture, and an intriguing conspiracy theory or two. Coverage includes "DeepThink: Alien Chess from Another Dimension,"  Zeno's Paradox: Life as a Film,  Apollo 11 Astronauts React to Lunar Conspiracy Theories (Video),  Jurassic Park: Fallen Kingdom  Trailer --Serves Up Science Questions.

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