FRB's --"Strange Signals from Alien Worlds" (WATCH Today's 'Galaxy' Stream)

 

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Fast Radio Bursts are millisecond-duration pulses of unknown origin that were discovered by pulsar astronomers in 2007. A decade on from the discovery, with only 20 further bursts currently known, fast radio bursts remain enigmatic sources which parallel the early days of gamma-ray burst astronomy in the early 1970s. Each burst lasts for a fraction of a second releasing more energy in that time than the sun will radiate in 10,000 years. Recent studies (see below) speculated that these bursts could come from alien radio transmitters.

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Hyper-Growth Galaxies from Early Universe --"Formed in Unusual Regions of the Cosmos"

 

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An international team of astronomers has discovered a new kind of galaxy which, although extremely old--formed less than a billion years after the Big Bang--creates stars more than a hundred times faster than our own Milky Way. "Very likely it is not a coincidence to find these productive galaxies close to bright quasars. Quasars are thought to form in regions of the universe where the large-scale density of matter is much higher than average. Those same conditions should also be conducive to galaxies forming new stars at a greatly increased rate," added Fabian Walter, of the Max Planck Institute for Astronomy.

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Cassini Solstice Mission --NASA Observes Saturn's Summer Close Up for the First Time

 

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NASA's Cassini spacecraft still has a few months to go before it completes its mission in September, but the veteran Saturn explorer reaches a new milestone today. Saturn's solstice—that is, the longest day of summer in the northern hemisphere and the shortest day of winter in the southern hemisphere—arrives today for the planet and its moons.

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NASA Tracks Strange Supermassive Black Hole Moving Away From Elliptical Galaxy's Center (VIDEO)

 

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Supermassive black holes are generally stationary objects, sitting at the centers of most galaxies. However, using data from NASA's Chandra X-ray Observatory and other telescopes, astronomers recently hunted down what could be a supermassive black hole that may be on the move.

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"The Day the Dinosaurs Died" -- Chicxulub Asteroid Impact Equivalent to 10 Billion Hiroshima Bombs Hit Worst Possible Place on Earth (WATCH Today's 'Galaxy'Stream)

 

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Scientists drilled into the Chicxulub crater buried underneath the Yucatán Peninsula recovered rocks from under the Gulf of Mexico that were hit by an asteroid 66 million years ago creating the niche that made the rise of homo sapiens possible. The 15 km-wide asteroid could not have hit a worse place on Earth. "All these fossils occur in a layer no more than 10cm thick," said palaeontologist Ken Lacovara. "They died suddenly and were buried quickly. It tells us this is a moment in geological time. That's days, weeks, maybe months. But this is not thousands of years; it's not hundreds of thousands of years. This is essentially an instantaneous event."

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Mystery in Galaxy Cygnus A --"Unknown Object of Extraordinary Brightness Discovered"

 

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"To our surprise, we found a prominent new feature near the galaxy's nucleus that did not appear in any previous published images. This new feature is bright enough that we definitely would have seen it in the earlier images if nothing had changed," said Rick Perley Rick of the National Radio Astronomy Observatory (NRAO). "That means it must have turned on sometime between 1996 and now," he added.

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WATCH Tuesday's 'Facebook Live' Virtual Tour of NASA's Centers --"At the Cutting Edge of Our Deep Space Destiny"

 

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Starting at 1:30 p.m. EDT, NASA's social media team will take visitors behind the scenes for a virtual tour of NASA and a look at the cutting-edge work here and on humanity's destiny in deep space. These Facebook Live events will be hosted on each center's Facebook page and will run about 15 minutes each. The following list of virtual tours includes times, centers and highlights of each tour. All times are EDT:

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(LISTEN THURSDAY) NASA to Livestream First Science Results from Juno Mission to Jupiter

 

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Scientists from NASA’s Juno mission to Jupiter will discuss their first in-depth science results in a media teleconference at 2 p.m. EDT Thursday, May 25, when multiple papers with early findings will be published online by the journal Science and Geophysical Research Letters.

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Supernova Explosions Over Millions of Years --"Source of Antimatter in the Milky Way"

 

 

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Scientists have known since the early 1970s that the inner parts of the Milky Way galaxy are a strong source of gamma-rays, indicating the existence of antimatter, but there had been no settled view on where the antimatter came from. Now, a team of international astrophysicists led by The Australian National University (ANU) has shown how most of the antimatter in the Milky Way forms. Antimatter is material composed of the antiparticle partners of ordinary matter – when antimatter meets with matter, they quickly annihilate each other to form a burst of energy in the form of gamma-rays.

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"Synestia" --A New Planet-Sized Object in the Cosmos Identified

 

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There's something new to look for in the heavens, and it's called a "synestia," according to planetary scientists Simon Lock at Harvard University and Sarah Stewart at the University of California, Davis. A synestia, they propose, would be a huge, spinning, donut-shaped mass of hot, vaporized rock, formed as planet-sized objects smash into each other.

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