Topic: Greenbelt MD
Written by Kate Ramsayer, NASA Goddard Space Flight Center
Washington, D.C. – Earth’s oceans and land cover are doing us a favor. As people burn fossil fuels and clear forests, only half of the carbon dioxide released stays in the atmosphere, warming and altering Earth’s climate. The other half is removed from the air by the planet’s vegetation ecosystems and oceans.
As carbon dioxide levels in the atmosphere continue their rapid, human-made rise past levels not seen for hundreds of thousands of years, NASA scientists and others are confronted with an important question for the future of our planet: How long can this balancing act continue? And if forests, other vegetation and the ocean cannot continue to absorb as much or more of our carbon emissions, what does that mean for the pace of climate change in the coming century?
Written by Elizabeth Zubritsky
Greenbelt, MD – The long, shallow grooves lining the surface of Phobos are likely early signs of the structural failure that will ultimately destroy this moon of Mars.
Orbiting a mere 3,700 miles (6,000 kilometers) above the surface of Mars, Phobos is closer to its planet than any other moon in the solar system. Mars’ gravity is drawing in Phobos, the larger of its two moons, by about 6.6 feet (2 meters) every hundred years. Scientists expect the moon to be pulled apart in 30 to 50 million years.
Written by Dwayne Brown / Laurie Cantillo
Washington, D.C. – NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) mission has identified the process that appears to have played a key role in the transition of the Martian climate from an early, warm and wet environment that might have supported surface life to the cold, arid planet Mars is today.
MAVEN data have enabled researchers to determine the rate at which the Martian atmosphere currently is losing gas to space via stripping by the solar wind. The findings reveal that the erosion of Mars’ atmosphere increases significantly during solar storms. The scientific results from the mission appear in the November 5th issues of the journals Science and Geophysical Research Letters.
Written by Bill Steigerwald
Greenbelt, MD – Comet Lovejoy lived up to its name by releasing large amounts of alcohol as well as a type of sugar into space, according to new observations by an international team. The discovery marks the first time ethyl alcohol, the same type in alcoholic beverages, has been observed in a comet.
The finding adds to the evidence that comets could have been a source of the complex organic molecules necessary for the emergence of life.
NASA’s Hubble and Kepler Space Telescopes data used to show that majority of planets like Earth have yet to be formed
Written by Donna Weaver / Ray Villard
Baltimore, MD – Earth came early to the party in the evolving universe. According to a new theoretical study, when our solar system was born 4.6 billion years ago only eight percent of the potentially habitable planets that will ever form in the universe existed. And, the party won’t be over when the sun burns out in another 6 billion years. The bulk of those planets – 92 percent – have yet to be born.
This conclusion is based on an assessment of data collected by NASA’s Hubble Space Telescope and the prolific planet-hunting Kepler space observatory.
Written by Nancy Neal-Jones/Elizabeth Zubritsky
Greenbelt, MD – Collecting these yearly images – essentially the planetary version of annual school picture days for children – will help current and future scientists see how these giant worlds change over time. The observations are designed to capture a broad range of features, including winds, clouds, storms and atmospheric chemistry.
Already, the Jupiter images have revealed a rare wave just north of the planet’s equator and a unique filamentary feature in the core of the Great Red Spot not seen previously.
“Every time we look at Jupiter, we get tantalizing hints that something really exciting is going on,” said Amy Simon, a planetary scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “This time is no exception.”
Written by DC Agle
Pasadena, CA – 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 as 2020. Three of those chosen have ties to NASA’s Jet Propulsion Laboratory in Pasadena, California.
The submitted proposals would study Venus, near-Earth objects and a variety of asteroids.
Each investigation team will receive $3 million to conduct concept design studies and analyses. After a detailed review and evaluation of the concept studies, NASA will make the final selections by September 2016 for continued development leading up to launch.
Written by Alan Buis
Pasadena, CA – Levels of “background ozone” — ozone pollution present in a region but not originating from local, human-produced sources — are high enough in Northern California and Nevada that they leave little room for local ozone production under proposed stricter U.S. ground-level ozone standards, finds a new NASA-led study.
The researchers, led by Min Huang of George Mason University, Fairfax, Virginia, used a novel technique that combined data acquired from two instruments on NASA’s Aura spacecraft in the summer of 2008.
Written by Ashley Morrow
Greenbelt, MD – On the evening of September 27th, 2015, into the early morning of September 28th EDT, operators of NASA’s Lunar Reconnaissance Orbiter (LRO) will wait as Earth blots out the sun and the moon goes dark.
The flight operations team at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, have seen LRO safely through three lunar eclipses in about a year and a half. Although it is certainly not an ordinary night, science operations planner Dawn Myers at Goddard said the team knows the routine.
“We have a method and it works well,” she said. “It’s always stressful during the approach of the eclipse, but we follow the same procedures every time and we haven’t had any trouble.”
Written by Kathryn Mersmann
Greenbelt, MD – For years, science fiction writers from Edgar Rice Burroughs to C. S. Lewis have imagined what it would be like for humans to walk on Mars. As mankind comes closer to taking its first steps on the Red Planet, authors’ depictions of the experience have become more realistic.
Andy Weir’s “The Martian” begins with a massive dust storm that strands fictional astronaut Mark Watney on Mars. In the scene, powerful wind rips an antenna out of a piece of equipment and destroys parts of the astronauts’ camp.
Mars is infamous for intense dust storms, which sometimes kick up enough dust to be seen by telescopes on Earth.
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