May 2024 – Page 3 – My WordPress Site

This chart shows, on the top row, artist concepts of the seven planets of TRAPPIST-1 with their orbital periods, distances from their star, radii, masses, densities and surface gravity as compared to those of Earth. Credit: NASA/JPL-Caltech (larger image)

Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy

Exoplanet Aeronomy: A Case Study of WASP-69b’s Variable Thermosphere

by Keith CowingMay 30, 2024May 30, 2024

Toomre diagram for the binary system TOI-1173 A/B indicating that our pair is located in the thin-disk. The stars, triangles and inverted triangles symbols represent stars from the thin-disk, thick-disk, and halo of the Galaxy, respectively, for context. Data taken from Ram´ırez et al. (2007) -- astro-ph.SR

Microgravity, Space Life Science, Space Stations, SPACELINE Current Awareness List

NASA Spaceline Current Awareness List #1,101 24 May 2024 (Space Life Science Research Results)

by Keith CowingMay 29, 2024

Colorized HiRISE map of the western edge of Jezero crater with rover traverse. The colors of the traverse indicate the location of different science campaigns with green showing the Crater Floor campaign (Section 2.1), orange showing the Fan Front campaign (Section 2.2), blue showing the Upper Fan campaign (Section 2.2), and pink showing the Margin Unit campaign (Section 2.4). Black arrows indicate the location of two investigations on boulders (Section 2.3). Planetary Instrument for X-ray Lithochemistry (PIXL) scans are indicated by either a square, triangle, or circle, indicating data collected on a natural surface target, an abrasion patch, or an abrasion patch where a sample was also collected, respectively. Sols associated with the triangles and circles indicate when the rover was at that location. The location of Three Forks Depot is shown by a star for reference. Journal of Geophysical Research: Planets

Missions & Hardware, Space Life Science, Space Stations

Your Next Life Science Laboratory Workspace May Be Offworld

by Keith CowingMay 29, 2024May 29, 2024

Surface (top row) and cloud (bottom row) distributions for our various Snowball Earth models. The surface was either modeled as a fully ice-covered “Hard Snowball” (top left) or contained a tropical ocean belt to simulate a “Slushball Earth” scenario (top right). Low-altitude water ice clouds (light blue) could have existed in an equatorial belt during summer months (bottom left) or only in the southern hemisphere during winter months. In winter these low-level clouds could have been fully covering the hemisphere (bottom middle left), scattered throughout the hemisphere (bottom middle right), or scattered throughout with additional high-altitude (grayish-blue) water ice clouds (bottom right). -- astro-ph.EP

Astrobiology (general), Career Opportunities, Conferences and Meetings, Education and Outreach

European Astrobiology Network Association EANA 2024

by Keith CowingMay 29, 2024May 29, 2024

Diverse density and composition of small exoplanets. The plot shows M-dwarf planets that have precision mass and radius measurements (Luque & Palle´ 2022). Small planets of FGK stars also occupy a broad parameter space that spans from Earth composition to water worlds or planets with massive H/He envelopes (Parc et al. 2024). The planets in the 1.4 – 2.6 Earth’s radius range can be large rocky planets, water worlds, or having massive H/He envelopes (Luque & Palle´ 2022; Rogers et al. 2023). The figure is adapted from Rogers et al. (2023) with permission. -- astro-ph.IM

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

Solvent Constraints For Biopolymer Folding And Evolution In Extraterrestrial Environments

by Keith CowingMay 29, 2024May 29, 2024

Mass fraction (left) and oxygen budget (right) for the detected heavy elements in WD 1647+375. The error bar represents the total uncertainty on the oxygen budget. -- astro-ph.EP

Astrochemistry, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Habitable Zones, Origin & Evolution of Life

Uncovering A Multibillion-year Epic Written Into The Chemistry Of Life

by Keith CowingMay 29, 2024May 29, 2024

Screenshot of the simba graphical user interface (GUI). The GUI consists of the input panel (left), visualisation panel (center), and control panel (right). The GUI enables simple analysis of chemical abundances and reaction rates, and provides a wide range of options for plot customisation. Publication-quality images and tabulated data can be exported. astro-ph.IM

Astrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Interstellar

CH3OH and Its Deuterated Species in the Disk/Envelope System of the Low-Mass Protostellar Source B335

by Keith CowingMay 29, 2024May 29, 2024

Astronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Gas Giants, Imaging & Spectroscopy

A Low-mass Sub-Neptune Planet Transiting The Bright Active Star HD 73344

by Keith CowingMay 29, 2024May 29, 2024

Lewis & Clark Fund for Exploration And Field Research in Astrobiology

Astronomy & Telescopes, Exoplanets, -moons, -comets, Science Fiction

Star Trek’s “Vulcan” aka HD 26965 b – Thought To Orbit 40 Eridani A – Is Not A Planet After All

by Keith CowingMay 29, 2024May 29, 2024

(A to C) Continuum-subtracted maps. (A) Integrated cube (6908-9158 Å). (B) [C i] λ8272 integrated map. (C) Sum of the integrated maps of the [O ii] doublet at 7320 and 7330 Å. White dashed contours indicate intensity levels. Their spacing are indicated with the whites lines on the colorbars. (D) MUSE spectrum (blue) and HST photometry (orange dots) of V2376 Ori b. HST filter widths are indicated by orange bars. Green lines mark recombination features, other lines are labeled in black. -- astro-ph.EP

Away Teams & Field Reports, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exploration Gear & Tech, Extremeophiles and Extreme Environments, Fossils & Paleontology, Imaging & Spectroscopy, Mars, Microbiology & Virology, Missions & Hardware, Tricorders & Sensors

The Complex Molecules Detector (CMOLD)

by Keith CowingMay 29, 2024May 29, 2024