December 2024 – Page 20 – My WordPress Site

Comparison of the potential sensitivity of telescopes to perform SETI searches for narrowband transmitters against frequency coverage (following Siemion et al. (2014) & Croft et al. (2018)). The telescope’s minimum detectable 𝐸 𝐼𝑅𝑃𝑚𝑖𝑛 is based on an integration time of 10 minutes, a significance threshold of 15, channel width of 0.5 Hz and distances up to 15 pc. ALMA operates at a higher frequency range than previously explored and is sensitive to radio powers similar to the Arecibo planetary radar system. astro-ph.IM

Astronomy & Telescopes, Biosignatures & Paleobiology, Intelligence & Language, Interstellar, SETI & Technosignatures, Stellar Cartography

Conducting High Frequency Radio SETI Using ALMA

by Keith CowingDecember 2, 2024December 2, 2024

NASA ID: PIA26106 (Artist's Concept) https://images.nasa.gov/details/PIA26106

Astrogeology, Europa, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Missions & Hardware, Water/Hycean Worlds & Oceanography

How REASON Will Penetrate Europa’s Surface

by Keith CowingDecember 2, 2024December 2, 2024

Drawing of a crystal structure of the (PMo12O40)3− Keggin anion shown by the blue polyhedra with sodium ions connecting the anions together in a three-dimensional lattice. In solution, the Keggin ion forms a vast range of ion pairs - Journal of The Royal Society Interface

Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Origin & Evolution of Life

Experimentally Measured Assembly Indices Are Required To Determine The Threshold For Life

by Keith CowingDecember 2, 2024December 2, 2024

The feedback loop (drawn in two variants) in the system ensures that the concentration of RNA enzymes and inhibitors remains constant. -- Entropy

Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Origin & Evolution of Life

The RNA World With Inhibitors

by Keith CowingDecember 2, 2024December 2, 2024

Date Created: 2024-11-14 larger image

Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Missions & Hardware, Plant Biology, Space Stations, Tricorders & Sensors, Water/Hycean Worlds & Oceanography

Orbital Recon: EMIT Collects Data On Terrestrial Plant Communities

by Keith CowingDecember 2, 2024November 30, 2024

Astronaut in a state of safe synthetic torpor during spaceflight - Grok via Astrobiology.com

Away Teams & Field Reports, Cryobiology, Exploration Gear & Tech, Life Support Systems, Missions & Hardware, Space Life Science, Space Physiology & Medicine

Working Toward Human Hibernation During Long Term Spaceflight

by Keith CowingDecember 1, 2024December 1, 2024

Mars Curiosity Self Portrait -- NASA

Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exploration Gear & Tech, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Mars, Missions & Hardware, Robotics/Rovers/UAVs

Enhancing Rover Mobility Monitoring: Autoencoder-driven Anomaly Detection for Curiosity

by Keith CowingDecember 1, 2024November 30, 2024

Al Wahbah crater, Saudi Arabia larger image -- Wikipedia

Analog Studies, Away Teams & Field Reports, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Caves, Craters, Mountains & Lava Tubes, Enceladus, Extremeophiles and Extreme Environments, Habitable Zones, Imaging & Spectroscopy, Mapping, Geodesy, Cartography

Polyextremophilic Bacteria in Al Wahbah Crater: A Terrestrial Model for Life On Enceladus

by Keith CowingDecember 1, 2024November 30, 2024

Date Created: 2024-11-14 Larger image

Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Missions & Hardware, Water/Hycean Worlds & Oceanography

Orbital Recon: EMIT Scans The Amazon River in Northern Brazil

by Keith CowingDecember 1, 2024November 30, 2024

Assessment of the detectability of HI at an enriched abundance (400 ppm versus at most 10 ppt). The top panel shows the emitted radiation of the Earth seen at quadrature with the atmosphere (blue), without the atmosphere (gray), and with exclusively 400 ppm of HI in the atmosphere to indicate the positions of the HI spectral features (orange). The bottom panel shows 1-transmittance, which guides the reader through the different absorption features seen in the top panel. HI is indicated in dark orange. The right panels show the same quantities, but focused on the 4 to 5 µm region which is analysed here. -- astro-ph.EP

Astronomy & Telescopes, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, SETI & Technosignatures

The Challenge of Detecting Remote Spectroscopic Signatures From Radionuclides

by Keith CowingDecember 1, 2024November 30, 2024