Our 'Red-Giant' Future --"An Old Star Offers a Sneak Preview of Earth's Future"

 

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Forget the popcorn. What will happen to Earth when, in a few billion years' time, the Sun is a hundred times bigger than it is today? Using the most powerful radio telescope in the world, an international team of astronomers has set out to look for answers in the star L2 Puppis. Five billion years ago, this star was very similar to the Sun as it is today.

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The Super Brain --"Mutation of Human Genome Two Million Years Ago Created the Big Leap That Led To Speaking and Thinking"

 

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The great British physicist Sir Roger Penrose likes to say that the human brain is more complex than our Milky Way Galaxy. Why are we the only species that evolved to have the ability to invent the radio, scan the depths of the cosmos with the Hubble Space Telescope, or detect gravitational waves from a collision of black holes in a remote galaxy two billion years ago?

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Today's 'Galaxy' Radio: "What if Earth Receives a SETI Message?"

 

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There’s no doubt that receiving the first message from an extraterrestrial civilization will be historic. But what would be the next step? Dan Werthimer directs the search for extraterrestrial intelligence, or SETI, at the University of California, Berkeley. He says that if humans ever receive a message, we should just keep listening.

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Daily Galaxy Twitter Followers Soar Above 370,000

 

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Join the 372,000 Daily Galaxy fans around the world who follow us via their Twitter page. Our followers include many of the planet's leading astronomers and scientists, astronauts, space observatories, news organizations, universities and governmental space organizations such as NASA, JPL, Goddard Space Flight Center, ESO, SETI, Harvard-Smithsonian Center for Astrophysics (CfA) and Royal Astronomy Society members. Follow us daily at twitter.com/dailygalaxy


EcoAlert: Greenland's 8-Million-Year-Old Ice Sheet 4 Times the Size of California --"Can Raise Global Sea Level by 20 Feet"

 

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The ice sheet covering Greenland is four times bigger than California—and holds enough water to raise global sea-level more than twenty feet if most of it were to melt. New field-based data suggests that during major climate cool-downs in the past several million years, the ice sheet expanded into previously ice-free areas, "showing that the ice sheet in East Greenland responds to and tracks global climate change,"says University of Vermont geologist Paul Bierman."The melting we are seeing today may be out of the bounds of how the Greenland ice sheet has behaved for many millions of years."

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NASA: Cassini Spacecraft Sends New Images of Hexagon On Verge of Skimming Saturn's Rings

 

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ASA's Cassini spacecraft has sent to Earth its first views of Saturn’s atmosphere since beginning the latest phase of its mission. The new images show scenes from high above Saturn's northern hemisphere, including the planet's intriguing hexagon-shaped jet stream.

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NASA: Coronal Hole Is Rotating Into View --"Spews Streams of High Speed Solar Wind Into Space"

 

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A substantial coronal hole began to rotate into view over the past few days (Dec. 1 - 2, 2016). Coronal holes are magnetically open areas of the sun's magnetic field structure that spew streams of high speed solar wind into space. In about a week or so that coronal hole might send streams of particles in the direction of Earth. Often times these streams can interact with Earth's magnetosphere and generate aurora. The images were taken in a wavelength of extreme ultraviolet light.

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ESA --New Evidence For "The Warm, Wet Early Epochs of the Red Planet"

 

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A recent study from ESA's Mars Express and NASA's Mars Reconnaissance Orbiter (MRO) provides new evidence for a warm young Mars that hosted water across a geologically long timescale, rather than in short episodic bursts – something that has important consequences for habitability and the possibility of past life on the planet. Although water is known to have once flowed on Mars, the nature and timeline of how and when it did so is a major open question within planetary science.

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NASA's 'StarTrek' EM Drive Propulsion System --"If Valid Points to a New Physics"

 

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After months of speculation and rumor, NASA released its long-awaited research paper on the controversial EM Drive propulsion system. The paper was recently published in the American Institute of Aeronautics and Astronautics' peer-reviewed Journal of Propulsion and Power. If the electromagnetic technology proves sound, it could radically change the way humans travel in space, opening up the possibility of journeys to Mars in just 70 days.

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European Southern Observatory Shines Light On the Dark Universe

 

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Scientists have gained fresh insight into the nature of dark matter, the elusive material that accounts for much of the mass of the Universe. Calculations based on a study of distant galaxies, using powerful ESO telescopes, suggest that dark matter is less dense and more smoothly distributed throughout space than previously thought.

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