June 2024 – Page 4 – My WordPress Site

Illustration of calibration levels from measured centroid in pixel space to angular relative astrometry. -- astro-ph.IM

Astrochemistry, Astrogeology, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar

Chemical Evolution of Complex Organic Molecules in Turbulent Protoplanetary Disks: Effect of stochastic UV irradiation

by Keith CowingJune 26, 2024June 26, 2024

Surface flux density observed and modelled. The m2F12-37-2.5 (dark green) and cF13-500-3 (light green) stellar atmosphere models are plotted at coefficients Xˆ 1=1 and Xˆ 2 = 1 (the theoretical assumption of the entire stellar surface exhibiting flaring activity). For AU Mic during a flare, the red solid and orange dashed lines show the fitted model spectrum at flare maximum using coefficients from the example fit (the flare data are stated in Table A.1 in Appendix A.2). The inverse H6 model at flare maximum, pre-flare and the ‘fiducial flare’ model from Loyd et al. (2018a) with a comparable ED is plotted as blue dash-dotted, light blue dashed, and purple dashed lines, respectively. Blackbody curves for 3850 K, 6000 K, 8000 K, and 10,000 K are included in black solid, dotted, dash-dotted and dashed lines. The panchromatic AU Mic flux from Feinstein et al. (2022) is plotted in light grey. Insets highlight the FUV (lower left) and TESS (lower right) wavelength ranges. -- astro-ph.SR

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

Low Temperature Formation of Pyridine and (iso)quinoline Via Neutral Neutral Reactions

by Keith CowingJune 26, 2024June 26, 2024

A Southwest Research Institute (SwRI) project is using data from NASA’s Polarimeter to Unify the Corona and Heliosphere (PUNCH) spacecraft to track the interstellar comet 3I/ATLAS. It tracked it for many weeks when it was behind the Sun as seen by Earth, making it difficult for other telescopes to follow it. The comet is visible in these images created by PUNCH between October 30 and November 2. -- SwRI

Arctic / Antarctic / Alpine, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Fossils & Paleontology, Habitable Zones, Microbiology & Virology, Water/Hycean Worlds & Oceanography

Exploring Microbial Mat Communities In Extreme Environments

by Keith CowingJune 26, 2024June 26, 2024

AI - Data - Apps - Cybernetics, Astrochemistry, Astrogeology, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Exploration Gear & Tech, Imaging & Spectroscopy, Missions & Hardware, Tricorders & Sensors

Tricorder Tech: The NASA Raman Spectroscopic Database: Ramdb version 1.00

by Keith CowingJune 26, 2024June 26, 2024

Giovanni Schiaparelli’s 1878 map of Mars has a distribution of features interpreted as land (white) and sea (blue). Many of the names Schiaparelli gave to locations on Mars are still used today. Source: Library of Congress.

Away Teams & Field Reports, Enceladus, Europa, Habitable Zones, Icy Worlds, Mars, Missions & Hardware, Panspermia, Planetary Protection & Biosafety, Policy, Reports, Roadmaps, & Plans, Titan, Water/Hycean Worlds & Oceanography

The COSPAR Planetary Protection Policy for Missions to Icy Worlds: A Review of History, Current Scientific Knowledge, And Future Directions

by Keith CowingJune 26, 2024June 26, 2024

NASA's Curiosity Mars rover captured this view looking back down at the floor of Gale Crater from its location on Mount Sharp on Feb. 7, 2025, the 4,447th Martian day, or sol, of the mission. A zoom and pan animation of the Curiosity panorama published at https://photojournal.jpl.nasa.gov/catalog/PIA26551

Astrobiology (general), Astrochemistry, Astrogeology, Biosignatures & Paleobiology, Conferences and Meetings, Habitable Zones

Astrobiology and the Future of Life Meeting

by Keith CowingJune 25, 2024

AI - Data - Apps - Cybernetics, Analog Studies, Arctic / Antarctic / Alpine, Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Cryobiology, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Missions & Hardware, Neptune, Triton, Water/Hycean Worlds & Oceanography

Increasing the Usability and Accessibility of Voyager 2 Images of Triton

by Keith CowingJune 25, 2024June 25, 2024

Side-by-side comparison of TOI (left) and KOI (right) radius vs orbital period. The red dashed line marks the 14-day orbital period. TOI detected more giant planets with shorter orbital periods, while KOI detected more smaller planets with longer orbital periods. -- astro-ph.EP

Analog Studies, Astrochemistry, Astrogeology, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Comets and Asteroids, Enceladus, Europa, Extremeophiles and Extreme Environments, Icy Worlds, Imaging & Spectroscopy, Meteorites & Asteroids, Missions & Hardware, Water/Hycean Worlds & Oceanography

Laboratory Characterization Of Hydrothermally Processed Oligopeptides In Ice Grains Emitted By Enceladus And Europa

by Keith CowingJune 25, 2024June 25, 2024

Analog Studies, Arctic / Antarctic / Alpine, Away Teams & Field Reports, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Enceladus, Europa, Exoplanets, -moons, -comets, Exploration Gear & Tech, Extremeophiles and Extreme Environments, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Microbiology & Virology, Origin & Evolution of Life, ROVs/Submersibles/Diving, Water/Hycean Worlds & Oceanography

Hydrothermal Vents On The Seafloors Of Ocean Worlds Could Support Life

by Keith CowingJune 25, 2024June 25, 2024

Comet 3I/ATLAS As Seen By ESA Juice Navigation Camera Larger images -- ESA

Astrochemistry, Astrogeology, Biogeochemical Cycles & Geobiology, Comets and Asteroids, Extinction events, Gaia - Planetary Perspectives, Habitable Zones, Impact events, Meteorites & Asteroids, Moon, Origin & Evolution of Life, Water/Hycean Worlds & Oceanography

Crash Chronicles: Relative Contribution From Comets and Carbonaceous Asteroids to Earth’s Volatile Budget In The Context of an Early Instability

by Keith CowingJune 25, 2024June 25, 2024