Fossil fuel burning and other human activities are the primary source for the rise in atmospheric carbon dioxide.

June 25, 2014

NASA's OCO-2 Will Track Our Impact on Airborne Carbon

Human activities are the primary source for the rise in atmospheric carbon dioxide. NASA's OCO-2 mission will help sort out the gas's human and natural sources and reservoirs.

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Cassini celebrates a decade in the Saturn system on June 30, 2014. Image credit: NASA/JPL-Caltech

June 25, 2014

Cassini Celebrates 10 Years Exploring Saturn

On June 30, NASA's Cassini mission will celebrate 10 years exploring Saturn, its rings and moons.

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This artist's concept shows the test vehicle for NASA's Low-Density Supersonic Decelerator (LDSD), designed to test landing technologies for future Mars missions.

June 25, 2014

NASA Sets New Dates for Saucer-Shaped Test Vehicle Flight

NASA's LDSD project plans to fly its rocket-powered, saucer-shaped landing technology test vehicle into near-space from Kauai, Hawaii, this weekend.

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'Pillinger Point' Overlooking Endeavour Crater on Mars

June 24, 2014

Aluminum-Bearing Site on Mars Draws NASA Visitor

NASA's Mars Exploration Rover Opportunity is examining a rocky, windswept ridge where aluminum in a clay mineral was mapped from orbit.

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Titan

June 23, 2014

Titan's Building Blocks Might Pre-date Saturn

A new study finds firm evidence that nitrogen in the atmosphere of Titan originated in conditions similar to the cold birthplace of comets from the Oort cloud.

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Curiosity self-portrait

June 23, 2014

NASA's Mars Curiosity Rover Marks First Martian Year

NASA's Mars Curiosity rover will complete a Martian year -- 687 Earth days -- on June 24.

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Readying NASA's Orbiting Carbon Observatory-2 for launch, a technician attaches the observatory to the payload attach system in a clean room at Vandenberg Air Force Base in California

June 19, 2014

NASA's OCO-2 Observatory Ready for Launch

The launch of NASA's Orbiting Carbon Observatory-2 mission (OCO-2) at Vandenberg Air Force Base (VAFB) in California, is scheduled for Tuesday, July 1.

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This image of comet 67P/Churyumov-Gerasimenko was taken by the Onboard Scientific Imaging System (OSIRIS) on the European Space Agency's Rosetta spacecraft on June 4, 2014.

June 19, 2014

Rosetta Closing in on Comet

The Rosetta spacecraft is beginning observations and sending science data back to Earth. It will become the first craft to orbit a comet and land a probe on its nucleus.

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Planning for NASA's 2020 Mars rover envisions a basic structure that capitalizes on the design

June 19, 2014

NASA Invites Public Comment on Mars 2020 Draft Environmental Impact Statement

NASA is requesting the public and interested organizations to review and comment on the Draft Environmental Impact Statement (DEIS) for the agency's proposed Mars 2020 mission.

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Artist Concept-Comparison

June 19, 2014

NASA Announces Latest Progress in Hunt for Asteroids

NASA is on the hunt for an asteroid to capture with a robotic spacecraft, redirect to a stable orbit around the moon, and send astronauts to study in the 2020s.

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