Acquisition Date: February 28, 1985 The Sierra de Velasco Mountains dominate this image in northern Argentina. The Catamarca province is in the northern part of the image, and the La Rioja province is to the south. The streams are fed by runoff from the snow in the Andes Mountains to the north. These intermittent streams can dry up rapidly. The larger urban area near the bottom of the image is La Rioja, the capital of the province of La Rioja. Credit: NASA/GSFC/Landsat/USGS To learn more about Landsat and to see the orginal high res file go to: <a href="http://landsat.usgs.gov/gallery_view.php?category=greenflag&thesort=mainTitle" rel="nofollow">landsat.usgs.gov/gallery_view.php?category=greenflag&...</a>

Mark Velasco (left) and Jared Sass assemble a custom cold heat exchanger for freezing carbon dioxide from a simulated Martian environment in the Cryogenics Test Laboratory at NASA's Kennedy Space Center on Mar. 20, 2019.

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September 11th remembrance ceremony held in front of NASA Research Park Bldg-17 (Lunar Science Institute) hosted by the American Legion, Post 881, Moffett Field. Step off to Amazing Grace - POW/MIA Detail; TSgt Robert Soua, Detail Commander, 129th Security Forces, TSgt Rachel Velasco, SSgt Susan Avalos, SSgt Alex Cohen, SSgt Elias Gonzalez

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RP-1 delivered to E-1 Test Stand

NASA John C. Stennis Space Center employee Dustan Ladner (left) assists tanker driver David Velasco in transferring RP-1 fuel to a 20,000-gallon underground tank at the E-1 Test Stand during a March 30 delivery. The rocket propellant will be used for testing Aerojet AJ26 rocket engines beginning this summer. Stennis is testing the engines for Orbital Sciences Corporation, which has partnered with NASA to provide eight supply missions to the International Space Station through 2015. The partnership is part of NASA's Commercial Orbital Transportation Services initiative to work closer with companies to provide commercial space transport once the space shuttle is retired later this year.

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CAPE CANAVERAL, Fla. - SpaceWear team members Keith Hargett, left, and Alejandro Velasco demonstrate their entry in the International Space Apps Challenge to NASA Ground Systems Development and Operation Program Manager Michael Bolger and NASA's Lisa Singleton in the Center for Space Education at the Kennedy Space Center Visitor Complex in Florida. Kennedy Space Center hosted one of the over 90 locations around the world where participants congregated for the attempt to design innovative solutions for global challenges over a 48-hour period. This year's development marathon focused on five NASA mission areas: Asteroids, Earth Watch, Human Spaceflight, Robotics, and Technology in Space. Three of this year’s challenges were developed by KSC employees: Space Wearables: Fashion Designer to Astronauts, Growing Food for a Martian Table, and Asteroid Prospector. The winners selected in 2014 at Kennedy were Astronaut Resource Managing System, or ARMS, for Best Use of Data and SpaceWear for Best Use of Hardware. ARMS also took the People's Choice Award. For more information, visit https://2014.spaceappschallenge.org. Photo credit: NASA/Daniel Casper

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CAPE CANAVERAL, Fla. - Members of the winning teams in the International Space Apps Challenge display their Galactic Problem Solver certificates. From left are SpaceWear team members Keith Hargett and Alejandro Velasco, and Astronaut Resource Managing System team members Roberto Ricci, Sam Neblett, and James Brucato. Caley Burke, the NASA event organizer lead, is at right. Kennedy Space Center hosted one of the over 90 locations around the world where participants congregated for the attempt to design innovative solutions for global challenges over a 48-hour period. This year's development marathon focused on five NASA mission areas: Asteroids, Earth Watch, Human Spaceflight, Robotics, and Technology in Space. Three of this year’s challenges were developed by KSC employees: Space Wearables: Fashion Designer to Astronauts, Growing Food for a Martian Table, and Asteroid Prospector. The winners selected in 2014 at Kennedy were Astronaut Resource Managing System, or ARMS, for Best Use of Data and SpaceWear for Best Use of Hardware. ARMS also took the People's Choice Award. For more information, visit https://2014.spaceappschallenge.org. Photo credit: NASA/Daniel Casper

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CAPE CANAVERAL, Fla. - SpaceWear team members Keith Hargett, left, and Alejandro Velasco participate in the International Space Apps Challenge in the Center for Space Education at the Kennedy Space Center Visitor Complex in Florida. Kennedy Space Center hosted one of the over 90 locations around the world where participants congregated for the attempt to design innovative solutions for global challenges over a 48-hour period. This year's development marathon focused on five NASA mission areas: Asteroids, Earth Watch, Human Spaceflight, Robotics, and Technology in Space. Three of this year’s challenges were developed by KSC employees: Space Wearables: Fashion Designer to Astronauts, Growing Food for a Martian Table, and Asteroid Prospector. The winners selected in 2014 at Kennedy were Astronaut Resource Managing System, or ARMS, for Best Use of Data and SpaceWear for Best Use of Hardware. ARMS also took the People's Choice Award. For more information, visit https://2014.spaceappschallenge.org. Photo credit: NASA/Daniel Casper

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CAPE CANAVERAL, Fla. - SpaceWear team members Keith Hargett, left, and Alejandro Velasco explain their entry in the International Space Apps Challenge to an audience in the Center for Space Education at the Kennedy Space Center Visitor Complex in Florida. In the audience at left is NASA Ground Systems Development and Operations Program Manager Michael Bolger. Caley Burke, the NASA event organizer lead, is at right. Kennedy Space Center hosted one of the over 90 locations around the world where participants congregated for the attempt to design innovative solutions for global challenges over a 48-hour period. This year's development marathon focused on five NASA mission areas: Asteroids, Earth Watch, Human Spaceflight, Robotics, and Technology in Space. Three of this year’s challenges were developed by KSC employees: Space Wearables: Fashion Designer to Astronauts, Growing Food for a Martian Table, and Asteroid Prospector. The winners selected in 2014 at Kennedy were Astronaut Resource Managing System, or ARMS, for Best Use of Data and SpaceWear for Best Use of Hardware. ARMS also took the People's Choice Award. For more information, visit https://2014.spaceappschallenge.org. Photo credit: NASA/Daniel Casper

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CAPE CANAVERAL, Fla. - Members of the winning Astronaut Resource Managing System and SpaceWear teams in the International Space Apps Challenge pose for a group portrait with the NASA volunteers, judges and event organizers. From left are Alejandro Velasco, NASA's Justin Treptow, Sam Neblett, Roberto Ricci, James Brucato, NASA's Suzanne Plantec, Keith Hargett, NASA's Cynthia Duffaut, NASA's Launa Maier, event organizer James Wood, event organizer lead Caley Burke, NASA's Lisa Singleton, event organizer David Miranda, NASA Ground Systems Development and Operation Program Manager Michael Bolger and NASA intern Brandi Burse. Kennedy Space Center hosted one of the over 90 locations around the world where participants congregated for the attempt to design innovative solutions for global challenges over a 48-hour period. This year's development marathon focused on five NASA mission areas: Asteroids, Earth Watch, Human Spaceflight, Robotics, and Technology in Space. Three of this year’s challenges were developed by KSC employees: Space Wearables: Fashion Designer to Astronauts, Growing Food for a Martian Table, and Asteroid Prospector. The winners selected in 2014 at Kennedy were Astronaut Resource Managing System, or ARMS, for Best Use of Data and SpaceWear for Best Use of Hardware. ARMS also took the People's Choice Award. For more information, visit https://2014.spaceappschallenge.org. Photo credit: NASA/Daniel Casper