The Sky Tonight

June 27, 2014

Scientists say decaying dark matter might be responsible for x-ray emission
Cambridge, Mass. (UPI) Jun 25, 2013
Dark matter is everywhere. According to astronomers, it makes up some 80 percent of all matter in the universe. But since it doesn't absorb or emit light, scientists have never seen dark matter. They don't even know what it is exactly. But a recent spike of x-rays originating from 70 different galaxy clusters has some scientists excited at the off chance it's a signal from decaying dark matter. "We know that the dark matter explanation is a long shot, but the payoff would be huge if we'r ... read more

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Spitzer Spies an Odd, Tiny Asteroid Astronomers using NASA's Spitzer Space Telescope have measured the size of an asteroid candidate for NASA's Asteroid Redirect Mission (ARM), a proposed spacecraft concept to capture either a small a ... more		Rosetta's comet: expect the unexpected An image snapped earlier this month by ESA's Rosetta spacecraft shows its target comet has quietened, demonstrating the unpredictable nature of these enigmatic objects. The picture was captured on 4 ... more		Nuanced account of stunning patterns in the microwave sky published Following a thorough peer-review process, the researchers who previously announced the detection of B-mode polarization in a patch of the microwave sky have published their findings in the journal P ... more
				NASA considers sending quadcopter drone to look for life on Titan While one NASA probe whizzes by Saturn's moon Titan on Thursday to analyze its atmosphere, the American space agency is also considering a plan to send a quadcopter drone capable of searching for li ... more		Astronomers pierce galactic clouds to shine light on black hole development An international team of scientists including a Virginia Tech physicist have discovered that winds blowing from a supermassive black hole in a nearby galaxy work to obscure observations and x-rays. ... more

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Cosmic Impacts May Help Create Suitable Habitat for Life Cosmic impacts are known to trigger mass extinctions on Earth. However, a new study adds to evidence that asteroid and cometary bombardment can also shelter life by generating pores in rocks that sh ... more		Titan Flybys Test the Talents of NASA's Cassini Team As NASA's Cassini spacecraft zooms toward Saturn's smoggy moon Titan for a targeted flyby on June 18, mission scientists are excitedly hoping to repeat a scientific tour de force that will provide v ... more		EU leaders plot defence boost in shadow of Denmark drones Germany wants to allow military to shoot down drones Leaked info: China's Taiwan invasion plans get help from Russia		Oracle adds Micros for $5.3 bn to boost cloud effort Business software giant Oracle said Monday it was buying rival Micros Systems for $5.3 billion in a deal to expand its big data efforts in key retail sectors. ... more
				Trapping light: a long lifetime in a very small place Physicists at the University of Rochester have created a silicon nanocavity that allows light to be trapped longer than in other similarly-sized optical cavities. An innovative design approach, whic ... more		Crowdsourcing the phase problem Compared with humans, computers have the capacity to solve problems at much greater speed. There are many problems, however, where computational speed alone is insufficient to find a correct or opti ... more

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Laser Physics upside down At the Vienna University of Technology a system of coupled lasers has been created which exhibits truly paradoxical behaviour: An increase in energy supply switches the lasers off, reducing the ener ... more		Quantum mechanism triggers emission of tunable light at terahertz levels Scientists have found that two-dimensional (2D) nanostructures with asymmetric design enable a new quantum mechanism, triggering the emission of tunable light at terahertz frequencies-with unprecede ... more		Philippines quake kills dozens as injured overwhelm hospitals Typhoon Bualoi inflicts death, lasting floods on Vietnam Moldova backs EU in elections marred by Russian interference		With light echoes, the invisible becomes visible Scientists at the University of Bonn and the University of British Columbia (Vancouver, Canada) have developed a novel camera system which can see around the corner without using a mirror. Using dif ... more
Mega-Earth in Draco Smashes Notions of Planetary Formation Worlds like this one aren't supposed to exist. In Draco the Dragon-the 8th largest constellation in our sky-there exists asolid planet weighing close to 17 times as much as Earth. This announcement ... more		NASA LRO's Moon As Art Collection Is Revealed The Lunar Reconnaissance team has marked the fifth anniversary of the lunar explorer's mission. LRO launched from Florida on June 18, 2009. After a four-day journey, the orbiter successfully entered ... more		Horizontal levitation: the ultimate solution to particle separation Magnetic separators exploit the difference in magnetic properties between minerals, for example when separating magnetite from quartz. But this exercise becomes considerably more complex when the pa ... more		Big Bang breakthrough team allows they may be wrong American astrophysicists who announced just months ago what they deemed a breakthrough in confirming how the universe was born now admit they may have got it wrong. ... more

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Massive solar flares threaten GPS

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NASA Instruments on Rosetta Start Comet Science

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Nearby satellite galaxies don't fit standard model

Gigantic Explosion Buried in Dust: ALMA Probes Environment around Gamma Ray Bursts

Gigantic explosions buried in dust

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