October 2024 – Page 4 – My WordPress Site

Sulfur distribution on the surface of Mercury expressed as S/Si (Nittler et al., 2020). The highest S abundances 90 degrees west at the equator and north of it coincides with the highest Ca and Mg abundances, referred to as the high magnesium region (HMR) (reproduced from Nittler et al., 2020). -- astro-ph.EP

Astrochemistry, Astrogeology, Lava / magma ocean / Volcanic Worlds, Mapping, Geodesy, Cartography, Mercury, Moon

Sulfur In The Moon And Mercury

by Keith CowingOctober 29, 2024October 29, 2024

Perseverance Mars Rover Looks Back While Climbing A Slippery Slope -- NASA

Exploration Gear & Tech, Mapping, Geodesy, Cartography, Mars, Missions & Hardware, Robotics/Rovers/UAVs, Sample Return

Perseverance Looks Back While Climbing A Steep Slope On Mars

by Keith CowingOctober 28, 2024

NASA's Mars Perseverance rover acquired this image, a nighttime mosaic of the Malgosa Crest abrasion patch at “Serpentine Rapids,” using its SHERLOC WATSON camera, located on the turret at the end of the rover's robotic arm. The diameter of the abrasion patch is 5 centimeters (about 2 inches) and the large green spot in the upper center left of the image is approximately 2 millimeters (about 0.08 inch) in diameter. Mosaic source images have been debayered, flat-fielded, and linearly color stretched. This image was acquired on Aug. 19, 2024 (sol 1243, or Martian day 1,243 of the Mars 2020 mission) at the local mean solar time of 19:45:30. NASA/JPL-Caltech Larger image

Astrogeology, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Caves, Craters, Mountains & Lava Tubes, Fossils & Paleontology, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Mars, Robotics/Rovers/UAVs, Sample Return

Mars Perseverance Rover Observes Red Rocks With Green Spots at Serpentine Rapids – Possible Biosignatures?

by Keith CowingOctober 27, 2024October 27, 2024

Thin wafer of water ice grown on the International Space Station Source: @Astro_pettit on Instagram

Cryobiology, Icy Worlds, Imaging & Spectroscopy, Microgravity, People Of Astrobiology, Space Stations, Water/Hycean Worlds & Oceanography

Offworld Science: Studying The Main Component Of Our Water World In Microgravity

by Keith CowingOctober 27, 2024October 27, 2024

Characterization of a section from the fracture surface to the rock interior. A Photo of the section with a yellow arrow pointing to the fracture surface. B Microscopic image of a region of the section highlighted in a yellow rectangle in A. C Fluorescence microscopy image of the region highlighted by orange rectangle in B. Intensity maps of the section at 1000 cm−1 (D), 1530 cm−1 (E), and 1640 cm−1 (F) obtained by optical photothermal infrared (O-PTIR) spectroscopy. The intensity maps were obtained from the area highlighted with a yellow square in B. G RGB color synthesis of the three intensity maps. A yellow rectangle in G indicates an area where the intensity maps for RGB color synthesis are obtained in Fig. 5A -- Springer Nature

Away Teams & Field Reports, Biosignatures & Paleobiology, Caves, Craters, Mountains & Lava Tubes, Extremeophiles and Extreme Environments, Fossils & Paleontology, Habitable Zones, Microbiology & Virology, Sample Return

Subsurface Microbial Colonization at Mineral-Filled Veins in 2-Billion-Year-Old Mafic Rock from the Bushveld Igneous Complex, South Africa

by Keith CowingOctober 27, 2024October 27, 2024

Stability analysis of the TOI-561 planetary system. For fixed initial conditions (Table 2), the parameter space of the system is explored by varying the orbital period and the eccentricity of planet- 𝑓 . The step size is 0.25 day in the orbital period and 0.0025 in the eccentricity. For each initial condition, the system is integrated over 10 000 yr, and a stability indicator is calculated, which involved a frequency analysis of the mean longitude of the inner planet. The chaotic diffusion is measured by the variation in the main frequency. Red points correspond to highly unstable orbits, while blue points correspond to orbits that are likely to be stable on Gyr timescales. The black curve corresponds to 𝐾 = 1.88 m/s and the black dot shows the values of the best fit solution (Table 2). -- astro-ph.EP

Astronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy

Architecture Of TOI-561 Planetary System

by Keith CowingOctober 27, 2024October 27, 2024

JWST MIRI-MRS spectrum of DoAr 33. The insets show isolated emission features of some of the molecules detected, and the calculated continuum is shown as a pink line. Most of the unmarked emission lines correspond to water vapor. We discuss the presence of dust emission features in Appendix A. -- astro-ph.EP

Astrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar

JWST/MIRI Detection Of A Carbon-rich Chemistry In A Solar Nebula Analog

by Keith CowingOctober 26, 2024October 26, 2024

Planetary Protection Metagenomics in Spaceflight Workshop -- NASA

Away Teams & Field Reports, Biosignatures & Paleobiology, Conferences and Meetings, Exploration Gear & Tech, Genomics, Proteomics, Bioinformatics, Life Support Systems, Mars, Missions & Hardware, Panspermia, Planetary Protection & Biosafety, Reports, Roadmaps, & Plans, Sample Return, Space Life Science, Space Physiology & Medicine

Planetary Protection Metagenomics in Spaceflight Workshop

by Keith CowingOctober 26, 2024October 26, 2024

NASA astronaut and Expedition 72 Flight Engineer Don Pettit

Microbiology & Virology, Microgravity, People Of Astrobiology, Space Life Science, Space Physiology & Medicine, Space Stations

Offworld Life Science Research: Tele-Luminescence Analysis System (TELLAS)

by Keith CowingOctober 26, 2024

Studying Astrobiology -- Grok via Astrobiology.com

Astrobiology (general), Conferences and Meetings, Courses, Education and Outreach

RED25: An Astrobiology Introductory Course

by Keith CowingOctober 26, 2024