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subjectTheory
authorJet Propulsion Laboratory/NASA
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An edited collection of advanced computing news from Communications of the ACM, ACM TechNews, other ACM resources, and news sites around the Web.


Rewrite of Onboard Memory Planned For Nasa Mars Orbiter
From ACM News

Rewrite of Onboard Memory Planned For Nasa Mars Orbiter

Tables stored in flash memory aboard NASA's Mars Reconnaissance Orbiter (MRO) tell locations of Earth and the sun for the past 10 years, but not their locations...

Seven Key Facts About Cassini's Oct. 28 'plume Dive'
From ACM News

Seven Key Facts About Cassini's Oct. 28 'plume Dive'

NASA's Cassini spacecraft will sample the ocean of Saturn's moon Enceladus on Wednesday, Oct. 28, when it flies through the moon's plume of icy spray.

Closest Northern Views of Saturn's Moon Enceladus
From ACM News

Closest Northern Views of Saturn's Moon Enceladus

NASA's Cassini spacecraft has begun returning its best-ever views of the northern extremes of Saturn's icy, ocean-bearing moon Enceladus.

Nasa's Curiosity Rover Team Confirms Ancient Lakes on Mars
From ACM News

Nasa's Curiosity Rover Team Confirms Ancient Lakes on Mars

A new study from the team behind NASA's Mars Science Laboratory/Curiosity has confirmed that Mars was once, billions of years ago, capable of storing water in lakes...

Jpl's Role in Making 'the Martian' a Reality
From ACM News

Jpl's Role in Making 'the Martian' a Reality

When fictional astronaut Mark Watney becomes stranded alone on the Red Planet in the novel and film "The Martian," people and technology from NASA's Jet Propulsion...

Nasa Selects Investigations For Future Key Planetary Mission
From ACM News

Nasa Selects Investigations For Future Key Planetary Mission

NASA has selected five science investigations for refinement during the next year as a first step in choosing one or two missions for flight opportunities as early...

Funky Light Signal From Colliding Black Holes Explained
From ACM News

Funky Light Signal From Colliding Black Holes Explained

Entangled by gravity and destined to merge, two candidate black holes in a distant galaxy appear to be locked in an intricate dance.

Cassini Finds Global Ocean in Saturn's Moon Enceladus
From ACM News

Cassini Finds Global Ocean in Saturn's Moon Enceladus

A global ocean lies beneath the icy crust of Saturn's geologically active moon Enceladus, according to new research using data from NASA's Cassini mission.

Mars Panorama from Curiosity Shows Petrified Sand Dunes
From ACM News

Mars Panorama from Curiosity Shows Petrified Sand Dunes

Some of the dark sandstone in an area being explored by NASA's Curiosity Mars rover shows texture and inclined bedding structures characteristic of deposits that...

What Happened to Early Mars' Atmosphere? New Study Eliminates One Theory
From ACM News

What Happened to Early Mars' Atmosphere? New Study Eliminates One Theory

Scientists may be closer to solving the mystery of how Mars changed from a world with surface water billions of years ago to the arid Red Planet of today.

Comet Hitchhiker Would Take Tour of Small Bodies
From ACM News

Comet Hitchhiker Would Take Tour of Small Bodies

Catching a ride from one solar system body to another isn't easy. You have to figure out how to land your spacecraft safely and then get it on its way to the next...

The Fingerprints of Sea Level Rise
From ACM News

The Fingerprints of Sea Level Rise

When you fill a sink, the water rises at the same rate to the same height in every corner. That's not the way it works with our rising seas.

Warming Seas and Melting Ice Sheets
From ACM News

Warming Seas and Melting Ice Sheets

Sea level rise is a natural consequence of the warming of our planet.

Cassini's Final Breathtaking Close Views of Dione
From ACM News

Cassini's Final Breathtaking Close Views of Dione

A pockmarked, icy landscape looms beneath NASA's Cassini spacecraft in new images of Saturn's moon Dione taken during the mission's last close approach to the small...

Cassini to Make Last Close Flyby of Saturn Moon Dione
From ACM News

Cassini to Make Last Close Flyby of Saturn Moon Dione

NASA's Cassini spacecraft will zip past Saturn's moon Dione on Monday, Aug. 17—the final close flyby of this icy satellite during the spacecraft's long mission.

Rosetta Comet Outburst Captured
From ACM News

Rosetta Comet Outburst Captured

The European Space Agency's Rosetta spacecraft has been witnessing growing activity from comet 67P/Churyumov-Gerasimenko as the comet approaches perihelion (its...

New Online Exploring Tools Bring NASA's Journey to Mars to New Generation
From ACM News

New Online Exploring Tools Bring NASA's Journey to Mars to New Generation

On the three-year anniversary of the Mars landing of NASA's Curiosity rover, NASA is unveiling two new online tools that open the mysterious terrain of the Redjourney...

NASA's Curiosity Rover Inspects ­nusual Bedrock
From ACM News

NASA's Curiosity Rover Inspects ­nusual Bedrock

Approaching the third anniversary of its landing on Mars, NASA's Curiosity Mars rover has found a target unlike anything it has studied before—bedrock with surprisingly...

A Wi-Fi Reflector Chip To Speed ­p Wearables
From ACM News

A Wi-Fi Reflector Chip To Speed ­p Wearables

Whether you're tracking your steps, monitoring your health or sending photos from a smart watch, you want the battery life of your wearable device to last as long...

Nasa Explains Why June 30 Will Get Extra Second
From ACM News

Nasa Explains Why June 30 Will Get Extra Second

The day will officially be a bit longer than usual on Tuesday, June 30, 2015, because an extra second, or "leap" second, will be added.
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