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March 29, 2012

Cosmic Rays Zapping South Pole -- "From the Neutron Star of the Vela Supernova?"

 

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The stunning image above from the orbiting Chandra X-ray Observatory is the Vela pulsar -- the collapsed stellar core within the Vela supernova remnant. The Vela pulsar is a neutron star. More massive than the Sun, it has the density of an atomic nucleus. About 12

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Today's Hot Tech News Video from IDG--Top Right of Page


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Today: Intel TV, Microsoft Windows 8, Android Apps, and more. 'The Daily Galaxy' content on the discoveries, people and events changing our planet and our knowledge of the Universe is brought to you daily by our major sponsor, IDG News Service (publishers of PC World, MacWorld, and Computerworld). 
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Our thanks for your support. It's greatly appreciated!

 

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Massive Black Hole Jets --Destroyers or Creators? Astronomers Unlock New Insights

 

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Do black holes hold the key that could unlock the secrets of our patch of the Universe? Some of the world's leading physicists believe that in the event that quantum effects allow time to extend indefinitely into the past that it could be possible that beyond the event horizon of a black hole is the beginning of another universe.

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NASA Observes Antimatter Streaming from Thunderstorms on Earth

 

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"We see gamma-ray bursts, one of the most distant phenomena we know about in the Universe, we see bursts from soft gamma-ray repeaters in our galaxy, flashes of gamma rays from solar flares, our solar neighborhood -- and now we're also seeing gamma rays from thunderstorms right here on Earth,"  said Julie McEnery, Fermi project scientist at Nasa.

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Ancient Antarctic Lake Reveals How Life Got a Foothold on Earth (Today's Most Popular)

 

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An Antarctic discovery in April of 2011 could  help scientists better understand the conditions under which the planet's primitive life-forms thrived. “It’s like going back to early Earth,” says Dawn Sumner, a geobiologist at the University of California, Davis, describing her explorations of the eerie depths of East Antarctica’s Lake Untersee where Sumner and her colleagues, led by Dale Andersen of the SETI Institute in Mountain View, Calif., discovered otherworldly mounds of Photosynthetic microbial stromatolites.

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March 28, 2012

NASA: "Enceladus a Lifezone Hotspot --90 Geyser Jets Spewing Water Vapor & Organics"

 

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In a series of tantalizingly close flybys to Saturn's moon "Enceladus," NASA's Cassini spacecraft has revealed watery jets erupting from what may be a vast underground sea. These jets, which spew through cracks in the moon's icy shell, could lead back to a habitable zone that is uniquely accessible in all the solar system.

"More than 90 jets of all sizes near Enceladus's south pole are spraying water vapor, icy particles, and organic compounds all over the place," says Carolyn Porco, an award-winning planetary scientist and leader of the Imaging Science team for NASA’s Cassini spacecraft. "Cassini has flown several times now through this spray and has tasted it. And we have found that aside from water and organic material, there is salt in the icy particles. The salinity is the same as that of Earth's oceans."

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Today's Hot Tech News Video from IDG--Top Right of Page

 

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Today: Intel TV, Microsoft Windows 8, Android Apps, and more. 'The Daily Galaxy' content on the discoveries, people and events changing our planet and our knowledge of the Universe is brought to you daily by our major sponsor, IDG News Service (publishers of PC World, MacWorld, and Computerworld). 

To launch the IDG News video, just hit the video-start arrow, above top right column.

Our thanks for your support. It's greatly appreciated!

 

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Comets Bombarding Early Earth Delivered the Amino Acids Needed for the Origins of Life

 

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Jennifer G. Blank, Ph.D., and colleagues at the Bay Area Environmental Research Institute at the NASA/Ames Research Center, Moffett Field, Calif., set out to check whether amino acids could remain intact after a comet's descent through Earth's atmosphere. Previous analyses of comet dust samples returned to Earth by a NASA spacecraft eliminated any doubt that amino acids do occur in comets.

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Mars' Vast Fields of Glass

 

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The surface of Mars exhibits numerous lava flows and other signs of effusive volcanism. Although models suggest that explosive volcanism should also have produced extensive deposits, direct evidence for large-scale explosive volcanism has been scarce. 

A new study by Briony Horgan and James F. Bell III at Arizona State University of the mineralogy of dark regions covering more than ten million square kilometers in the northern hemisphere of Mars has revealed that these regions are dominantly composed of glass. 

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Oldest Alien Planets Discovered to Date—Born at Dawn of Universe 12.8 billion Years Ago

 

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Two huge Jupiter-sized planets found orbiting a star 375 light-years away, that will soon transform into a red giant (image above), are the oldest alien worlds yet discovered, reported scientists at the Max-Planck Institute for Astronomy in Heidelberg, Germany. "The Milky Way itself was not completely formed yet," said study leader Johny Setiawan. During a recent survey using radial velocity, in which astronomers watch for periodic wobbles in a star's light due to the gravitational tugs of orbiting worlds, Setiawan and colleagues found the signatures of the two planets orbiting the star, dubbed HIP 11952. 

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