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11 to 20 of 2,884 Results
Thresholds of Temperature and Time for Mars Sample Return: Final Report of The Mars Sample Return Temperature-Time Tiger TeamEmbargoed
May 7, 2024
Brandi Carrier, 2024, "Thresholds of Temperature and Time for Mars Sample Return: Final Report of The Mars Sample Return Temperature-Time Tiger Team", https://doi.org/10.48577/jpl.9L1CQV, Astrobiology, JPL Open Repository
The Time-Temperature Tiger Team (T4) was chartered by NASA and ESA to evaluate the risks to the scientific return of Mars Sample Return (MSR) samples if they are exposed to temperatures between +30 and +60 ⁰C. Thirteen scientists, were selected to represent the scientific discipl...
Reconstructed Performance of the Mars 2020 Parachute Decelerator System
May 6, 2024
Clara O'Farrell, 2024, "Reconstructed Performance of the Mars 2020 Parachute Decelerator System", https://doi.org/10.48577/jpl.YX2DJD, Journal of Spacecraft and Rockets, JPL Open Repository
On February 18, 2021 the Mars 2020 mission’s Perseverance rover successfully landed on Jezero crater. The spacecraft’s Entry, Descent, and Landing (EDL) sequence included a 21.53-m supersonically deployed Disk-Gap-Band parachute that was a strengthened version of the parachute us...
Sensorweb Systems for Global High-Resolution Monitoring of Environmental PhenomenaEmbargoed
May 6, 2024
Steve Chien, 2024, "Sensorweb Systems for Global High-Resolution Monitoring of Environmental Phenomena", https://doi.org/10.48577/jpl.AGWI0O, Journal of Aerospace Information Systems, JPL Open Repository
Many science phenomena are difficult to observe because they occur infrequently and without warning. Over the course of the last twenty years, the concept of a "sensorweb", or a network of interdependent instruments that autonomously coordinate to observe phenomena of interest, h...
PlanetMag manuscriptEmbargoed
May 2, 2024
Corey Cochrane, 2024, "PlanetMag manuscript", https://doi.org/10.48577/jpl.OBBCJ8, Earth and Space Science, JPL Open Repository
Spacecraft investigation of planets within the solar system have provided a rich context for understanding their dynamic magnetic environments. Magnetic field measurements are able to tell us much about the planet’s interior dynamics, composition, and evolutionary timeline. Magne...
Can rifts alter ocean dynamics beneath ice shelves?Embargoed
May 1, 2024
Mattia Poinelli, 2024, "Can rifts alter ocean dynamics beneath ice shelves?", https://doi.org/10.48577/jpl.QM6MHD, The Cryosphere, JPL Open Repository
Land ice discharge from the Antarctic continent into the ocean is restrained by ice shelves, floating extensions of grounded ice that buttress the glacier freshwater outflow. The ongoing thinning of these ice shelves - largely due to enhanced melting at their base in response to...
Progress in the miniature trapped ion optical clock development with 16 cc sealed trap tubeEmbargoed
May 1, 2024
Nan Yu, 2024, "Progress in the miniature trapped ion optical clock development with 16 cc sealed trap tube", https://doi.org/10.48577/jpl.NKDEYM, IOP Journal of Physics, JPL Open Repository
Optical clocks have well surpassed the frequency stability performance of microwave clocks. They have been mainly limited to tabletop setups and large rack-mount systems. Miniaturizing optical clocks will make the new technology and capability more ubiquitously applied to applica...
Mars 2020 Descent Stage Integrated Propulsion Subsystem: Changes from MSL and Flight PerformanceEmbargoed
May 1, 2024
Arturo Casillas, 2024, "Mars 2020 Descent Stage Integrated Propulsion Subsystem: Changes from MSL and Flight Performance", https://doi.org/10.48577/jpl.VBDNQ0, Journal of Spacecraft and Rockets, JPL Open Repository
On February 18, 2021, NASA’s Mars 2020 mission successfully landed the Perseverance rover in Jezero Crater, the heaviest interplanetary rover ever built, on the surface of Mars. Following up on the successful Entry, Descent and Landing of the Curiosity rover of the Mars Science L...
The Discovery of Four Eccentric Sub-Neptunes Close to M dwarfs from TESSEmbargoed
May 1, 2024
Catherine Clark, 2024, "The Discovery of Four Eccentric Sub-Neptunes Close to M dwarfs from TESS", https://doi.org/10.48577/jpl.FCEX98, Astronomical Journal, JPL Open Repository
Sub-Neptunes with 2 − 3R⊕, which are commonly discovered around M dwarfs, are intermediate planets that bridge a gap between abundant rocky planets and rare Neptune- and Jupiter-sized ones. The orbital properties and bulk compositions of transiting sub-Neptunes give an inkling of...
A Regionally Refined Quarter-degree Global Atmospheric Rivers Database Based on ERA5, 1940–2022Embargoed
May 1, 2024
Bin Guan, 2024, "A Regionally Refined Quarter-degree Global Atmospheric Rivers Database Based on ERA5, 1940–2022", https://doi.org/10.48577/jpl.VRTI0A, Scientific Data, JPL Open Repository
Atmospheric rivers (ARs) are narrow, elongated, synoptic jets of water vapor that play important roles in the global water cycle. The continually developing Tracking Atmospheric Rivers Globally as Elongated Targets(tARget) algorithm identifies AR objects at individual time steps...
A geometric-phase-based phase-knife mask for stellar nullingEmbargoed
May 1, 2024
Eugene Serabyn, 2024, "A geometric-phase-based phase-knife mask for stellar nulling", https://doi.org/10.48577/jpl.ST5DXO, Optics Express, JPL Open Repository
Exoplanets can potentially be detected very close to stars with single-mode cross-aperture nulling interferometry, a photonic nulling technique that relies on the inability of an anti-symmetric stellar point-spread function to couple to a single-mode fiber’s symmetric mode. We pr...
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