Veteran Ocean Satellite to Assume Added Role

A veteran oceanography satellite that has expanded our knowledge of global sea level, ocean currents and climate will take on an added role: improving maps of the sea floor.

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How a Speck of Light Becomes an Asteroid

June 30 is International Asteroid Day. Have you ever wondered how asteroids are discovered? Here's the story.

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Sleuthing for Seismic Answers in the Sooner State

A NASA-led study examines the geology of last September's magnitude 5.8 earthquake in Pawnee, Oklahoma, the strongest ever measured by instruments in state history.

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NASA Television to Air Departure of U.S. Cargo Ship from International Space Station

After delivering about 6,000 pounds of cargo, a SpaceX Dragon cargo spacecraft is set to leave the International Space Station on Sunday, July 2. NASA Television and the agency’s website will provide live coverage of Dragon's departure beginning at 11:15 a.m. EDT.

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An Algorithm Helps Protect Mars Curiosity's Wheels

A new software program reduces wear and tear on the Curiosity Mars rover wheels.

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NASA Invites Public to Celebrate 100 Years of Aerospace Breakthroughs

NASA invites the public to three days of discussion and storytelling with notable aerospace experts to mark the 100th anniversary of the agency’s Langley Research Center in Hampton, Virginia. Portions of the event will air live on NASA Television and the agency’s website.

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NASA Celebrates International Asteroid Day with Special Broadcast

NASA will mark International Asteroid Day Friday, June 30, with a special program on NASA TV and online featuring the agency's work to find and study near-Earth objects.

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NASA Keeps a Close Eye on Tiny Stowaways

Cleanliness on the International Space Station is a priority.

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NASA Celebrates International Asteroid Day with Special Broadcast

NASA will mark the worldwide observance of International Asteroid Day at noon EDT Friday, June 30, with a special television program featuring the agency’s Planetary Defense Coordination Office and other projects working to find and study near-Earth objects (NEOs). The program will air on NASA Television and the agency’s website.

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NASA Completes Milestone Toward Quieter Supersonic X-Plane

NASA has achieved a significant milestone in its effort to make supersonic passenger jet travel over land a real possibility by completing the preliminary design review (PDR) of its Quiet Supersonic Transport or QueSST aircraft design.

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Lightning Sparking More Boreal Forest Fires

A new NASA-funded study finds that lightning storms were the main driver of recent massive fire years in Alaska and northern Canada, and that these storms are likely to move farther north with climate warming, potentially altering northern landscapes.

The study, led by Vrije Universiteit Amsterdam and the University of California, Irvine, examined the cause of the fires, which have been increasing in number in recent years. There was a record number of lightning-ignited fires in the Canadian Northwest Territories in 2014 and in Alaska in 2015. The team found increases of between two and five percent a year in the number of lightning-ignited fires since 1975.

To study the fires, the team analyzed data from NASA's Terra and Aqua satellites and from ground-based lightning networks.

Lead author Sander Veraverbeke of Vrije Universiteit Amsterdam, who conducted the work while at UC Irvine, said that while the drivers of large fire years in the high north are still poorly understood, the observed trends are consistent with climate change.

"We found that it is not just a matter of more burning with higher temperatures. The reality is more complex: higher temperatures also spur more thunderstorms. Lightning from these thunderstorms is what has been igniting many more fires in these recent extreme events," Veraverbeke said.

Study co-author Brendan Rogers at Woods Hole Research Center in Falmouth, Massachusetts, said these trends are likely to continue. "We expect an increasing number of thunderstorms, and hence fires, across the high latitudes in the coming decades as a result of climate change." This is confirmed in the study by different climate model outputs.

Study co-author Charles Miller of NASA's Jet Propulsion Laboratory in Pasadena, California, said while data from the lightning networks were critical to this study, it is challenging to use these data for trend detection because of continuing network upgrades. "A spaceborne sensor that provides high northern latitude lightning data that can be linked with fire dynamics would be a major step forward," he said.

The researchers found that the fires are creeping farther north, near the transition from boreal forests to Arctic tundra. "In these high-latitude ecosystems, permafrost soils store large amounts of carbon that become vulnerable after fires pass through," said co-author James Randerson of the University of California, Irvine. "Exposed mineral soils after tundra fires also provide favorable seedbeds for trees migrating north under a warmer climate."

"Taken together, we discovered a complex feedback loop between climate, lightning, fires, carbon and forests that may quickly alter northern landscapes," Veraverbeke concluded. "A better understanding of these relationships is critical to better predict future influences from climate on fires, and from fires on climate."

The study was published in the journal Nature Climate Change. The Alaska Fire Science Consortium at the University of Alaska, Fairbanks, also participated in the study.

News Media Contact

Alan Buis

Jet Propulsion Laboratory, Pasadena, California

818-354-0474

Alan.Buis@jpl.nasa.gov

Sander Veraverbeke

Vrije Universiteit Amsterdam, The Netherlands

011-31-6-11101574

s.s.n.veraverbeke@vu.nl

Brian Bell

University of California, Irvine

949-824-8249

bpbell@uci.edu

2017-178

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NASA Awards Contract for Institutional Support Services

NASA has awarded the Kennedy Space Center Institutional Support Services IV (KISS IV) contract to Apache-Logical Joint Venture of Albuquerque, New Mexico.

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Media Accreditation Open for Launch of NASA’s Newest Communications Satellite

Media accreditation is open for the launch of NASA's Tracking and Data Relay Satellite (TDRS)-M. Liftoff on a United Launch Alliance Atlas V rocket from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida is targeted for 9:02 a.m. EDT Aug. 3, at the opening of a 40-minute launch window.

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Mars Rover Opportunity on Walkabout Near Rim

NASA's senior Mars rover, Opportunity, is examining rocks at the edge of Endeavour Crater for signs that they may have been either transported by a flood or eroded in place by wind.

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Witness Cassini's Finale at Saturn Live from JPL

NASA invites social media users to apply for access to Cassini end-of-mission events at JPL, culminating with the spacecraft's entry into Saturn's atmosphere early Sept. 15.

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Why No One Under 20 Has Experienced a Day Without NASA at Mars

As the Mars Pathfinder spacecraft approached its destination on July 4, 1997, no NASA mission had successfully reached the Red Planet in more than 20 years.

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NASA Awards Contract for Atmospheric Trace-Gas Monitoring Mission

NASA has awarded a contract to the University of Oklahoma in Norman for a first-of-its-kind Earth science mission that will extend our nation’s lead in measuring key carbon-based greenhouse gases and vegetation health from space to advance our understanding of Earth’s natural exchanges of carbon between the land, atmosphere and ocean.

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NASA Selects Logistics Management Services Contractor

NASA has selected Lockwood Hills Federal, LLC of Herndon, Virginia, to provide institutional logistics management services for the agency’s Ames Research Center in Moffett Field, California.

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NASA Opens Media Credentialing for Sept. 15 Cassini Saturn Finale

Media accreditation is now open for events around the conclusion of Cassini's mission at Saturn. The spacecraft, which has explored the ringed planet and its moons since 2004, will make a fateful plunge into Saturn's atmosphere on Sept. 15, ending its long and discovery-rich mission.

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Laser-targeting A.I. Yields More Mars Science

The software has had a successful first year on NASA's Curiosity rover and is planned for the Mars 2020 mission.

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A.I. Will Prepare Robots for the Unknown

JPL experts outline how autonomy can free robotic explorers to make discoveries.

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NASA Completes Study of Future 'Ice Giant' Mission Concepts

NASA has released a study of potential future missions to Uranus and Neptune -- part of a series of NASA studies in support of the next Planetary Science Decadal Survey.

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NASA Prepares for Aug. 21 Total Solar Eclipse with Live Coverage, Safety Information

For the first time in 99 years, a total solar eclipse will occur across the entire continental United States, and NASA is preparing to share this experience of a lifetime on Aug. 21.

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Media Invited to June 21 Science, Safety Briefings on August Total Solar Eclipse

For the first time in 99 years, a total solar eclipse will cross the entire nation Aug. 21. Representatives from NASA, other federal agencies, and science organizations, will provide important viewing safety, travel and science information during two briefings at the Newseum in Washington starting at 1 p.m. EDT Wednesday, June 21.

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Media Invited to Learn about NASA’s Project to Streamline Air Travel

Media are invited to watch a virtual presentation and briefing on NASA’s Airspace Technology Demonstration 2 (ATD-2) Integrated Arrival / Departure / Surface Metroplex Traffic Management System at 11:30 a.m. EDT on Thursday, June 22.

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Video: Developing Landing Tech for Space

NASA technology aims for more precise interplanetary landings.

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NASA Mars Orbiter Views Rover Climbing Mount Sharp

Using the most powerful telescope ever sent to Mars, NASA's Mars Reconnaissance Orbiter caught a view of the Curiosity rover this month amid rocky mountainside terrain.

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NASA Debuts Automated System to Streamline Technology Patent Licensing

NASA has developed a new system to streamline the way the agency licenses its technology patents, making the transfer of NASA-patented innovations to industry easier than ever before.

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NASA Awards Joint Operations, Integrated Systems Technology Contracts

NASA has awarded contracts to five companies for development, sustainment, and maintenance of information technology software, systems and support for the Flight Operations Directorate at NASA’s Johnson Space Center in Houston.

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NASA Releases Kepler Survey Catalog with Hundreds of New Planet Candidates

NASA's Kepler space telescope team releases a catalog of planet candidates that includes 219 new candidates. Ten are near-Earth size and orbit in their star's habitable zone.

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NASA Releases Kepler Survey Catalog with Hundreds of New Planet Candidates

NASA’s Kepler space telescope team has released a mission catalog of planet candidates that introduces 219 new planet candidates, 10 of which are near-Earth size and orbiting in their star's habitable zone, which is the range of distance from a star where liquid water could pool on the surface of a rocky planet.

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Martian Crater Provides Reminder of Apollo Moonwalk

NASA's Mars Exploration Rover Opportunity passed near a young crater this spring during the 45th anniversary of Apollo 16's trip to Earth's moon, prompting a connection between two missions.

Opportunity's science team informally named the Martian feature "Orion Crater." The name honors the Apollo 16 lunar module, Orion, which carried astronauts John Young and Charles Duke to and from the surface of the moon in April 1972 while crewmate Ken Mattingly piloted the Apollo 16 command module, Casper, in orbit around the moon. Orion is also the name of NASA's new spacecraft that will carry humans into deep space and sustain them during travel beyond Earth orbit.

Opportunity's Panoramic Camera (Pancam) took component images for this view of Orion Crater on April 26, 2017. The crater is about 90 feet (27 meters) wide and estimated to be no older than 10 million years.

"It turns out that Orion Crater is almost exactly the same size as Plum Crater on the moon, which John Young and Charles Duke explored on their first of three moonwalks taken while investigating the lunar surface using their lunar rover," said Opportunity science-team member Jim Rice, of the Planetary Science Institute, Tucson, Arizona.

Rice sent Duke the Pancam mosaic of Mars' Orion Crater, and Duke responded, "This is fantastic. What a great job! I wish I could be standing on the rim of Orion like I was standing on the rim of Plum Crater 45 years ago."

A historical photo of Duke at Plum Crater is online at:

http://ift.tt/2rogFjh

For more information about Opportunity's adventures on Mars, visit:

http://ift.tt/2sHdbfv

News Media Contact

Guy Webster

Jet Propulsion Laboratory, Pasadena, Calif.

818-354-6278

guy.webster@jpl.nasa.gov

Laurie Cantillo / Dwayne Brown

NASA Headquarters, Washington

202-358-1077 / 202-358-1726

laura.l.cantillo@nasa.gov / dwayne.c.brown@nasa.gov

2017-167

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Georgia Students to Speak with NASA Astronaut on the International Space Station

Students at the Fayette County Public Library in Fayetteville, Georgia, will speak with a NASA astronaut living and working aboard the International Space Station at 11:45 a.m. EDT on Monday, June 19. The 20-minute, Earth-to-space call will air live on NASA Television and the agency’s website.

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NASA Awards Neutral Buoyancy Laboratory Operations Contract

NASA’s has awarded a contract to Raytheon Intelligence, Information and Service of Houston for support of flight crew training and development activities at the Sonny Carter Training Facility at NASA’s Johnson Space Center in Houston.

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Media Invited to June 21 Science, Safety Briefings on August Total Solar Eclipse

For the first time in 99 years, a total solar eclipse will cross the entire nation Aug. 21. Representatives from NASA, other federal agencies, and science organizations, will provide important viewing safety, travel and science information during two briefings at the Newseum in Washington starting at 1 p.m. EDT Wednesday, June 21.

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NuSTAR's First Five Years in Space

To celebrate the fifth anniversary of NASA's NuSTAR space mission, the mission's lead scientist, Fiona Harrison of Caltech, talks about some of her favorite images.

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NASA Hosts Briefing on Latest Results of Exoplanet-Hunting Mission

NASA will hold a media briefing at 11 a.m. EDT Monday, June 19, to announce the latest planet candidate results from the agency's exoplanet-hunting Kepler mission. The briefing, taking place during the Kepler Science Conference, will be held at NASA’s Ames Research Center in California’s Silicon Valley.

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NASA Selects Safety, Mission Assurance Support Contractor

NASA has selected Bastion Technologies, Inc. (BTI), of Houston, to provide safety and mission assurance support services at the agency’s Marshall Space Flight Center in Huntsville, Alabama.

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Media Invited to NASA’s Kepler and K2 Mission Science Conference

NASA invites members of the media to attend the fourth Kepler and K2 Science Conference held June 19-23. The weeklong science conference will take place at NASA’s Ames Research Center in California’s Silicon Valley.

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NASA Finds Evidence of Diverse Environments in Curiosity Samples

NASA scientists have found a wide diversity of minerals in the initial samples of rocks collected by the Curiosity rover in the lowermost layers of Mount Sharp on Mars, suggesting that conditions changed in the water environments on the planet over time.

Curiosity landed near Mount Sharp in Gale Crater in August 2012. It reached the base of the mountain in 2014. Layers of rocks at the base of Mount Sharp accumulated as sediment within ancient lakes around 3.5 billion years ago. Orbital infrared spectroscopy had shown that the mountain's lowermost layers have variations in minerals that suggest changes in the area have occurred.

In a paper published recently in Earth and Planetary Science Letters, scientists in the Astromaterials Research and Exploration Science (ARES) Division at NASA's Johnson Space Center in Houston report on the first four samples collected from the lower layers of Mount Sharp.

"We went to Gale Crater to investigate these lower layers of Mount Sharp that have these minerals that precipitated from water and suggest different environments," said Elizabeth Rampe, the first author of the study and a NASA exploration mission scientist at Johnson. "These layers were deposited about 3.5 billion years ago, coinciding with a time on Earth when life was beginning to take hold. We think early Mars may have been similar to early Earth, and so these environments might have been habitable."

The minerals found in the four samples drilled near the base of Mount Sharp suggest several different environments were present in ancient Gale Crater. There is evidence for waters with different pH and variably oxidizing conditions. The minerals also show that there were multiple source regions for the rocks in "Pahrump Hills" and "Marias Pass."

The paper primarily reports on three samples from the Pahrump Hills region. This is an outcrop at the base of Mount Sharp that contains sedimentary rocks scientists believe formed in the presence of water. The other sample, called "Buckskin," was reported last year, but those data are incorporated into the paper.

Studying such rock layers can yield information about Mars' past habitability, and determining minerals found in the layers of sedimentary rock yields much data about the environment in which they formed. Data collected at Mount Sharp with the Chemistry and Mineralogy (CheMin) instrument on Curiosity showed a wide diversity of minerals.

At the base are minerals from a primitive magma source; they are rich in iron and magnesium, similar to basalts in Hawaii. Moving higher in the section, scientists saw more silica-rich minerals. In the "Telegraph Peak" sample, scientists found minerals similar to quartz. In the "Buckskin" sample, scientists found tridymite. Tridymite is found on Earth, for example, in rocks that formed from partial melting of Earth's crust or in the continental crust -- a strange finding because Mars never had plate tectonics.

In the "Confidence Hills" and "Mojave 2" samples, scientists found clay minerals, which generally form in the presence of liquid water with a near-neutral pH, and therefore could be good indicators of past environments that were conducive to life. The other mineral discovered here was jarosite, a salt that forms in acidic solutions. The jarosite finding indicates that there were acidic fluids at some point in time in this region.

There are different iron-oxide minerals in the samples as well. Hematite was found near the base; only magnetite was found at the top. Hematite contains oxidized iron, whereas magnetite contains both oxidized and reduced forms of iron. The type of iron-oxide mineral present may tell scientists about the oxidation potential of the ancient waters.

The authors discuss two hypotheses to explain this mineralogical diversity. The lake waters themselves at the base were oxidizing, so either there was more oxygen in the atmosphere or other factors encouraged oxidation. Another hypothesis -- the one put forward in the paper -- is that later-stage fluids arose. After the rock sediments were deposited, some acidic, oxidizing groundwater moved into the area, leading to precipitation of the jarosite and hematite. In this scenario, the environmental conditions present in the lake and in later groundwater were quite different, but both offered liquid water and a chemical diversity that could have been exploited by microbial life.

"We have all this evidence that Mars was once really wet but now is dry and cold," Rampe said. "Today, much of the water is locked up in the poles and in the ground at high latitudes as ice. We think that the rocks Curiosity has studied reveal ancient environmental changes that occurred as Mars started to lose its atmosphere and water was lost to space."

In the paper, the authors discuss whether this specific area on Mars is a mark of this event happening or just a natural drying of this area. Scientists will search for answers to these questions as the rover moves up the mountain.

To view the paper, go to:

http://ift.tt/2sLkoIR

To learn more about ARES, go to:

http://ift.tt/2poepIq

For more information about the Curiosity rover mission, visit:

http://ift.tt/2sKXqkV

http://ift.tt/2mPIDkN

News Media Contact

William P. Jeffs

Johnson Space Center, Houston

281-483-5111

william.p.jeffs@nasa.gov

Guy Webster

Jet Propulsion Laboratory, Pasadena, Calif.

818-354-6278

guy.webster@jpl.nasa.gov

Laurie Cantillo / Dwayne Brown

NASA Headquarters, Washington

202-358-1077 / 202-358-1726

laura.l.cantillo@nasa.gov / dwayne.c.brown@nasa.gov

2017-165

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NASA Data Suggest Future May Be Rainier Than Expected

Global climate models may underestimate the amount of rain that will fall in the tropics as our planet continues to warm.

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NASA Television to Cover International Space Station Cargo Ship Launch, Docking

NASA Television will provide live coverage of the launch and docking of a Russian cargo spacecraft delivering almost three tons of food, fuel and supplies to the International Space Station beginning at 5 a.m. EDT Wednesday, June 14.

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The Art of Exoplanets

How do you visualize distant worlds that you can't see? A team of artists uses scientific data to imagine exoplanets and other astrophysical phenomena.

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Three DIY CubeSats Score Rides on NASA’s First Flight of Orion, Space Launch System

NASA's Space Technology Mission Directorate (STMD) has awarded rides for three small spacecraft on the agency's newest rocket, and $20,000 each in prize money, to the winning teams of citizen solvers competing in the semi-final round of the agency’s Cube Quest Challenge.

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NASA’s Newest Astronaut Recruits to Conduct Research off the Earth, For the Earth and Deep Space Missions

After receiving a record-breaking number of applications to join an exciting future of space exploration, NASA has selected its largest astronaut class since 2000. Rising to the top of more than 18,300 applicants, NASA chose 12 women and men as the agency’s new astronaut candidates.

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NASA Awards Universal Stage Adapter Contract for Space Launch System Rocket

NASA has selected Dynetics, Inc. of Huntsville, Alabama, to develop and build a universal stage adapter for the agency’s Space Launch System (SLS) rocket. The adapter will connect NASA’s Orion spacecraft and provide additional cargo space for the future configurations of the rocket containing an exploration upper stage (EUS).

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New Clues to Boomerang Nebula Mystery

An ancient, red giant star in the throes of a frigid death has produced the coldest known object in the cosmos: the Boomerang Nebula. But how was this star able to create an environment so much colder than the natural background temperature of deep space?

The answer, according to astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA), may be that a small companion star has plunged into the heart of the red giant, ejecting most of the matter of the larger star as an ultra-cold outflow of gas and dust. Raghvendra Sahai, an astronomer at NASA's Jet Propulsion Laboratory in Pasadena, California, led a study on the mysterious nebula that appears in The Astrophysical Journal.

Read more from ALMA

News Media Contact

Elizabeth Landau

Jet Propulsion Laboratory, Pasadena, California

818-354-6425

elizabeth.landau@jpl.nasa.gov

Charles Blue

National Radio Astronomy Observatory

434-296-0314

cblue@nrao.edu

2017-162

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Maryland Students to Speak to NASA Astronaut on Space Station

Students at Leeds Elementary School in Elkton, Maryland, will speak with a NASA astronaut living and working aboard the International Space Station at 9:30 a.m. EDT on Friday, June 9.

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Flares May Threaten Planet Habitability Near Red Dwarfs

Data from the GALEX spacecraft suggest that planets around cool dwarf stars may be subjected to intense flares.

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Astronomers Find Planet Hotter Than Most Stars

A newly discovered Jupiter-like world is so hot, it's being vaporized by its own star.

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NASA's Asteroid-Hunting Spacecraft a Discovery Machine

NASA's Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) mission has released its third year of survey data of asteroid and comet discoveries.

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NASA Selects Three Aeronautics Teams to Explore ‘Ambitious’ Ideas

Three teams of NASA researchers who have dreamed up potential solutions for pieces of the Unmanned Aircraft Systems (UAS) puzzle have received the nod to officially begin formal feasibility studies of their concepts.

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New NASA Experiments, Research Headed to International Space Station

Major experiments that will look into the human body and out into the galaxy are on their way to the International Space Station aboard a SpaceX Dragon spacecraft following its 5:07 p.m. EDT launch aboard a Falcon 9 rocket.

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Vice President Pence to Visit NASA’s Johnson Space Center for Astronaut Class Announcement

Vice President Mike Pence will visit NASA's Johnson Space Center in Houston on Wednesday, June 7, to welcome America’s newest astronaut candidates, chosen from more than 18,000 applicants to carry the torch for future human space exploration.

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Media Invited to Demonstrations of NASA Drone Traffic Management Technologies

NASA’s three-week national campaign to further test and refine its Unmanned Aircraft Systems (UAS) Traffic Management (UTM) technologies continues, and media are invited to see these technologies in action Tuesday, June 6, at four Federal Aviation Administration (FAA) test sites across the country.

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U.S. Cargo Ships to Depart, Arrive at International Space Station

With the delay of SpaceX’s eleventh commercial resupply services mission to the International Space Station to Saturday, June 3, two NASA commercial provider cargo ships now will pass each other in orbit to provide services to the space station.

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Curiosity Peels Back Layers on Ancient Martian Lake

A long-lasting lake on ancient Mars provided stable environmental conditions that differed from one part of the lake to another, NASA's Curiosity rover mission has found.

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Where Ocean Meets Sky: New NASA Radar Gets a Tryout

A novel JPL instrument offers a simultaneous view of ocean currents and winds from multiple directions.

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NASA TV Coverage Set for Return of Two Space Station Crew Members

Two crew members on the International Space Station are scheduled to depart the orbital outpost Friday, June 2. Coverage of their departure and return to Earth will air live on NASA Television and the agency’s website beginning Thursday, June 1, with the space station change of command ceremony.

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New Light on the Future of a Key Antarctic Glacier

Thwaites Glacier is melting rapidly but not as fast as earlier research predicted, according to a new NASA study using a more realistic computer model.

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