J. N. Maki
A5021573194- Planetary Science and Exploration
- Astro and Planetary Science
- Space Exploration and Technology
- Space Science and Extraterrestrial Life
- Spaceflight effects on biology
- Geology and Paleoclimatology Research
- Spacecraft Design and Technology
- Space exploration and regulation
- Space Satellite Systems and Control
- Spacecraft and Cryogenic Technologies
- Methane Hydrates and Related Phenomena
- Robotics and Sensor-Based Localization
- 3D Surveying and Cultural Heritage
- Calibration and Measurement Techniques
- Aeolian processes and effects
- Rocket and propulsion systems research
- Spacecraft Dynamics and Control
- Geophysics and Gravity Measurements
- Paleontology and Stratigraphy of Fossils
- Infrared Target Detection Methodologies
- Geological Modeling and Analysis
- Satellite Image Processing and Photogrammetry
- Marine and environmental studies
- Adaptive optics and wavefront sensing
- Laser-induced spectroscopy and plasma
Jet Propulsion Laboratory
2016-2025
Stanford University
2024
Johns Hopkins University Applied Physics Laboratory
2023
California Institute of Technology
1999-2021
SUNY Geneseo
2020
University of Colorado Boulder
1997-2016
Space Science Institute
2004
Cornell University
1997-2004
Ames Research Center
2004
Search for Extraterrestrial Intelligence
2004
The Curiosity rover discovered fine-grained sedimentary rocks, which are inferred to represent an ancient lake and preserve evidence of environment that would have been suited support a martian biosphere founded on chemolithoautotrophy. This aqueous was characterized by neutral pH, low salinity, variable redox states both iron sulfur species. Carbon, hydrogen, oxygen, sulfur, nitrogen, phosphorus were measured directly as key biogenic elements; inference, is assumed available. probably had...
Scheduled to land in August of 2012, the Mars Science Laboratory (MSL) Mission was initiated explore habitability Mars. This includes both modern environments as well ancient recorded by stratigraphic rock record preserved at Gale crater landing site. The Curiosity rover has a designed lifetime least one year (∼23 months), and drive capability 20 km. Curiosity's science payload specifically assembled assess gas chromatograph-mass spectrometer analyzer that will search for organic carbon...
The Microscopic Imager (MI) on the Mars Exploration Rover Opportunity has returned images of with higher resolution than any previous camera system, allowing detailed petrographic and sedimentological studies rocks soils at Meridiani Planum landing site. Designed to simulate a geologist's hand lens, MI is mounted Opportunity's instrument arm can resolve objects 0.1 mm across or larger. This paper provides an overview operations, data calibration, analysis during first 900 sols (Mars days)...
The Mars Science Laboratory (MSL) Hand Lens Imager (MAHLI) investigation will use a 2-megapixel color camera with focusable macro lens aboard the rover, Curiosity, to investigate stratigraphy and grain-scale texture, structure, mineralogy, morphology of geologic materials in northwestern Gale crater. Of particular interest is stratigraphic record ∼5 km thick layered rock sequence exposed on slopes Aeolis Mons (also known as Mount Sharp). instrument consists three parts, head mounted turret...
Abstract The Interior Exploration using Seismic Investigations, Geodesy and Heat Transport (InSight) spacecraft landed successfully on Mars imaged the surface to characterize surficial geology. Here we report geology subsurface structure of landing site aid in situ geophysical investigations. InSight a degraded impact crater Elysium Planitia smooth sandy, granule- pebble-rich with few rocks. Superposed craters are common eolian bedforms sparse. During landing, pulsed retrorockets modified...
The Perseverance rover landed in Jezero crater, Mars, to investigate ancient lake and river deposits. We report observations of the crater floor, below crater's sedimentary delta, finding that floor consists igneous rocks altered by water. lowest exposed unit, informally named Séítah, is a coarsely crystalline olivine-rich rock, which accumulated at base magma body. Magnesium-iron carbonates along grain boundaries indicate reactions with carbon dioxide-rich water under water-poor conditions....
The geological units on the floor of Jezero crater, Mars, are part a wider regional stratigraphy olivine-rich rocks, which extends well beyond crater. We investigated petrology olivine and carbonate-bearing rocks Séítah formation in Jezero. Using multispectral images x-ray fluorescence data, acquired by Perseverance rover, we performed petrographic analysis Bastide Brac outcrops within this unit. found that these composed igneous rock, moderately altered aqueous fluid. mainly made...
Abstract The first samples collected by the Mars 2020 mission represent units exposed on Jezero Crater floor, from potentially oldest Séítah formation outcrops to youngest rocks of heavily cratered Máaz formation. Surface investigations reveal landscape‐to‐microscopic textural, mineralogical, and geochemical evidence for igneous lithologies, some possibly emplaced as lava flows. contain major rock‐forming minerals such pyroxene, olivine, feldspar, accessory including oxides phosphates,...
Abstract Sedimentary fans are key targets of exploration on Mars because they record the history surface aqueous activity and habitability. The sedimentary fan extending from Neretva Vallis breach Jezero crater's western rim is one 2020 Perseverance rover's main targets. spent ∼250 sols exploring collecting seven rock cores lower ∼25 m exposed within fan's eastern scarp, a sequence informally named “Shenandoah” formation. This study describes sedimentology stratigraphy Shenandoah formation...
The NASA Mars 2020 Perseverance Rover Mission has collected samples of rock, regolith, and atmosphere within the Noachian-aged Jezero Crater, once site a delta-lake system with high potential for habitability biosignature preservation. Between sols 109 1,088 mission, 27 sample tubes have been sealed, including witness tubes. Each sealed tube along detailed documentation provided by instrument payload, preserving geological environmental context. Samples representative stratigraphy each four...
The Panoramic Camera (Pancam) investigation is part of the Athena science payload launched to Mars in 2003 on NASA's twin Exploration Rover (MER) missions. scientific goals Pancam are assess high‐resolution morphology, topography, and geologic context each MER landing site, obtain color images constrain mineralogic, photometric, physical properties surface materials, determine dust aerosol opacity from direct imaging Sun sky. also provides mission support measurements for rovers, including...
Images of the martian surface returned by Imager for Mars Pathfinder (IMP) show a complex ridges and troughs covered rocks that have been transported modified fluvial, aeolian, impact processes. Analysis spectral signatures in scene (at 440- to 1000-nanometer wavelength) reveal three types rock four classes soil. Upward-looking IMP images predawn sky thin, bluish clouds probably represent water ice forming on local atmospheric haze (opacity approximately 0.5). Haze particles are about 1...
NASA's Mars Exploration Rover (MER) Mission will place a total of 20 cameras (10 per rover) onto the surface in early 2004. Fourteen are designated as engineering and support operation vehicles on Martian surface. Images returned from also be significant importance to scientific community for investigative studies rock soil morphology. The Navigation (Navcams, two mast‐mounted stereo pair each with 45° square field view (FOV) an angular resolution 0.82 milliradians pixel (mrad/pixel). Hazard...
Wind‐related features observed by the rover Spirit in Gusev crater, Mars, include patches of soil on surface, some which are organized into bed forms. Windblown grains dust (inferred to be <3 μm diameter), sands (up a few hundred and granules (>2 mm diameter). Microscopic Imager data show rounded relatively spherical, typical transported long distances wind. The interior forms exposed operations suggests infiltration among grains, indicating that these not currently experiencing...
Abstract The NASA Curiosity rover Mast Camera (Mastcam) system is a pair of fixed‐focal length, multispectral, color CCD imagers mounted ~2 m above the surface on rover's remote sensing mast, along with associated electronics and an onboard calibration target. left Mastcam (M‐34) has 34 mm focal instantaneous field view (IFOV) 0.22 mrad, FOV 20° × 15° over full 1648 1200 pixel span its Kodak KAI‐2020 CCD. right (M‐100) 100 IFOV 0.074 6.8° 5.1° using same detector. cameras are separated by...
Abstract The Mars Science Laboratory Mast camera and Descent Imager investigations were designed, built, operated by Malin Space Systems of San Diego, CA. They share common electronics focal plane designs but have different optics. There are two Mastcams dissimilar length. Mastcam‐34 has an f /8, 34 mm length lens, the M‐100 /10, 100 lens. M‐34 field view is about 20° × 15° with instantaneous (IFOV) 218 μrad; (FOV) 6.8° 5.1° IFOV 74 μrad. can focus from 0.5 m to infinity, ~1.6 infinity. All...