The Sky Tonight

July 09, 2014

Planet Mercury a result of early hit-and-run collisions
Tempe AZ (SPX) Jul 09, 2014
Planet Mercury's unusual metal-rich composition has been a longstanding puzzle in planetary science. According to a study published online in Nature Geoscience July 6, Mercury and other unusually metal-rich objects in the solar system may be relics left behind by collisions in the early solar system that built the other planets. The origin of planet Mercury has been a difficult question in planetary science because its composition is very different from that of the other terrestrial planets and th ... read more

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Models suggest stretching forces shaped Ganymede's surface Processes that shaped the ridges and troughs on the surface of Jupiter's icy moon Ganymede are likely similar to tectonic processes seen on Earth, according to a team of researchers led by Southwest ... more		When Life Went Global "An origin of life is not the same as an origin of a biosphere-that's an important distinction," says David Grinspoon, a planetary scientist and curator of astrobiology for the Denver Museum of Natu ... more		Sun Sends More 'Tsunami Waves' to Voyager 1 NASA's Voyager 1 spacecraft has experienced a new "tsunami wave" from the sun as it sails through interstellar space. Such waves are what led scientists to the conclusion, in the fall of 2013, that ... more
				A hotspot for powerful cosmic rays An observatory run by the University of Utah found a "hotspot" beneath the Big Dipper emitting a disproportionate number of the highest-energy cosmic rays. The discovery moves physics another step t ... more		Burning down to Rosetta comet rendezvous It's burn week in space again, and Wednesday, 2 July, marks the start of a fresh set of four orbit correction manoeuvres (OCMs), referred to as the "Far Approach Trajectory" burns. These will be som ... more

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Puffing Sun Gives Birth To Reluctant Eruption A suite of NASA's sun-gazing spacecraft have spotted an unusual series of eruptions in which a series of fast puffs forced the slow ejection of a massive burst of solar material from the sun's atmos ... more		NASA's IRIS Solar Observatory After 1 Year in Space On June 27, 2013, NASA's newest solar observatory was launched into orbit around Earth. The Interface Region Imaging Spectrograph, or IRIS, observes the low level of the sun's atmosphere - a consta ... 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		A young star's age can be gleamed from nothing but sound waves Determining the age of stars has long been a challenge for astronomers. In experiments published in the journal Science, researchers at KU Leuven's Institute for Astronomy show that 'infant' stars c ... more
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Worlds most powerful centrifuge begins operations in China

Physicists tighten the net on elusive dark matter

SATNUS completes third NGWS flight campaign with autonomous systems integration

Cassini Names Final Mission Phase Its 'Grand Finale'		Discovery expands search for Earth-like planets		Cassini Celebrates 10 Years Exploring Saturn		Radio Signals from Jupiter Could Aid Search for Life		Hubble to Proceed with Full Search for New Horizons Targets
Saturn's moon Titan has a very salty ocean		Comet Pan-STARRS Marches Across the Sky		'Deep learning' makes search for exotic particles easier		Two 'Goldilocks planets' that might support life are proven false		Puzzling X-rays point to dark matter

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Astronomers discover most Earth-like of all exoplanets

Ancient Worlds Could Be Kept 'Alive' by Gravitational Nudges

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Upside-down drive: NASA tests under-ice space rover

Computing Paths to Asteroids Helps Find Future Exploration Opportunities

Remarkable White Dwarf Star Possibly Coldest, Dimmest Ever Detected

NASA's STEREO Maps Much Larger Solar Atmosphere Than Previously Observed

Time-traveling photons connect general relativity to quantum mechanics

Black hole trio holds promise for gravity wave hunt

Ghost writing the whip

New NASA Model Gives Glimpse into the Invisible World of Electric Asteroids

Whale of a target: harpooning space debris

Mysterious 'Magic Island' appears on Saturn moon

Scientists say decaying dark matter might be responsible for x-ray emission

Spitzer Spies an Odd, Tiny Asteroid

Laser Physics upside down

Rosetta's comet: expect the unexpected

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