Communications of the ACM
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From ACM NewsAn edited collection of advanced computing news from Communications of the ACM, ACM TechNews, other ACM resources, and news sites around the Web.
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New Study Finds Sea Level Rise Accelerating
The rate of global sea level rise has been accelerating in recent decades, rather than increasing steadily, according to a new study based on 25 years of NASA and...
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NASA Tests Atomic Clock For Deep Space Navigation
In deep space, accurate timekeeping is vital to navigation, but many spacecraft lack precise timepieces on board.
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New Nasa Space Sensors to Address Key Earth Questions
Why is the Arctic warming faster than the rest of the planet?
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Vista From Mars Rover Looks Back Over Journey So Far
A panoramic image that NASA's Curiosity Mars rover took from a mountainside ridge provides a sweeping vista of key sites visited since the rover's 2012 landing,...
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Nasa Space Telescopes Provide a 3D Journey Through the Orion Nebula
Astronomers and visualization specialists from NASA's Universe of Learning program have combined visible and infrared vision of the Hubble and Spitzer space telescopes...
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Nasa Sees First Direct Proof of Ozone Hole Recovery
For the first time, scientists have shown through direct observations of the ozone hole by a satellite instrument, built by NASA's Jet Propulsion Laboratory in...
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Sierras Lost Water Weight, Grew Taller During Drought
Loss of water from the rocks of California's Sierra Nevada caused the mountain range to rise nearly an inch (24 millimeters) in height during the drought years...
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Bright Areas on Ceres Suggest Geologic Activity
If you could fly aboard NASA's Dawn spacecraft, the surface of dwarf planet Ceres would generally look quite dark, but with notable exceptions.
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Found: Most Distant Black Hole
Scientists have uncovered a rare relic from the early universe: the farthest known supermassive black hole. This matter-eating beast is 800 million times the mass...
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Voyager 1 Fires p Thrusters After 37 Years
If you tried to start a car that's been sitting in a garage for decades, you might not expect the engine to respond. But a set of thrusters aboard the Voyager 1...
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Nasa Builds Its Next Mars Rover Mission
In just a few years, NASA's next Mars rover mission will be flying to the Red Planet.
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Nasa Links Port-City Sea Levels to Regional Ice Melt
A new NASA tool links changes in sea level in 293 global port cities to specific regions of melting land ice, such as southern Greenland and the Antarctic Peninsula...
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Listening For Gravitational Waves Using Pulsars
One of the most spectacular achievements in physics so far this century has been the observation of gravitational waves, ripples in space-time that result from...
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Dawn Explores Ceres' Interior Evolution
Surface features on Ceres—the largest world between Mars and Jupiter—and its interior evolution have a closer relationship than one might think.
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Powering Saturn's Active Ocean Moon
Heat from friction could power hydrothermal activity on Saturn's moon Enceladus for billions of years if the moon has a highly porous core, according to a new modeling...
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Next Mars Rover Will Have 23 'eyes'
When NASA's Mars Pathfinder touched down in 1997, it had five cameras: two on a mast that popped up from the lander, and three on NASA's first rover, Sojourner....
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Take a Walk on Mars, in Your Own Living Room
When NASA scientists want to follow the path of the Curiosity rover on Mars, they can don a mixed-reality headset and virtually explore the Martian landscape.
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Deep Space Communications via Faraway Photons
A spacecraft destined to explore a unique asteroid will also test new communication hardware that uses lasers instead of radio waves.
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Fresh Findings From Cassini
NASA's Cassini spacecraft ended its journey on Sept. 15 with an intentional plunge into the atmosphere of Saturn, but analysis continues on the mountain of data...
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