Proxima Centauri – Page 5 – My WordPress Site

Hydrothermal vents on the ocean floor, known as black smokers, emit volcanically heated fluids rich in dissolved metals and sulfur. These environments are oases of microbial activity on the ocean floor. -- Marum Universitat of Bremen

Astrochemistry, Astronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Proxima Centauri

Visible Extreme Adaptive Optics On Extremely Large Telescopes: Towards Detecting Oxygen In Proxima Centauri b And Analog

by Keith CowingSeptember 6, 2023September 6, 2023

Exoplanets, -moons, -comets, Proxima Centauri

Stable Orbits in the Feeding Zone of the Planet Proxima Centauri c

by Keith CowingSeptember 5, 2023September 5, 2023

GeneLab -- NASA

AI - Data - Apps - Cybernetics, Away Teams & Field Reports, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Exploration Gear & Tech, Habitable Zones, Imaging & Spectroscopy, Missions & Hardware, Proxima Centauri

Away Team Tech: Proxima Centauri Interstellar Flyby Scientific Data Downlink Design

by Keith CowingJuly 1, 2023July 1, 2023

Exoplanets, -moons, -comets, Habitable Zones, Proxima Centauri, Space Weather & Heliophysics

Revisiting The Space Weather Environment Of Proxima Centauri b

by Keith CowingNovember 30, 2022November 30, 2022

One example of formation tracks for a system that belongs to Class I. The solid grey lines show the tracks of all protoplanets. The ones that remain through the end (5 Gyr) are additionally marked with colour symbols at the end of the track, according to their composition. Green (blue) full circles show rocky (icy) bodies without H/He, while green (blue) empty circles show rocky (icy) bodies with a H/He envelope, and red full circles are gas-rich bodies (more than 50 % H/He by mass). Black stars and empty circles show target and impactor of giant impacts, with dotted black lines connecting the impact partners. The analytical isolation (violet, Eq. (1)), Goldreich (orange, Eq. (12)), saturation (green, Eq. (9)), equality (cyan, Eq. (4)), and growth (pink, Eq. (2)) mass scales are shown. The latter is only shown where it is lower than isolation mass. In Class I systems, the masses in the inner system are governed by the (mean) Goldreich’s mass MGold, i.e., via the final giant impact phase. The saturation mass is evaluated at two different times. -- astro-ph.EP

Alpha Centauri, Exoplanets, -moons, -comets, Habitable Zones, Proxima Centauri, Space Weather & Heliophysics, TRAPPIST-1

Stellar Space Weather Effects On Potentially Habitable Planets

by Keith CowingNovember 29, 2022November 29, 2022

At the entrance to the ice cave Credits: ESA/IPEV/PNRA–S. Freigang Larger image

Astronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Proxima Centauri, TRAPPIST-1, Water/Hycean Worlds & Oceanography

Traveling Planetary-scale Waves Cause Cloud Variability On Tidally Locked Aquaplanets

by Keith CowingNovember 23, 2022November 23, 2022

Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Proxima Centauri

Lightning-induced Chemistry On tidally-locked Earth-like Exoplanets

by Keith CowingSeptember 27, 2022September 27, 2022

Conceptual and geographic layout of the study system. Space weather from the sun, such as coronal mass ejections, disturb Earth’s magnetic field, causing the auroras and potentially decreasing the magnetic field’s reliability for migrating birds. Artwork by John Megahan, University of Michigan, from Gulson-Castillo et al. in PNAS, October 2023.

Exoplanets, -moons, -comets, Imaging & Spectroscopy, Proxima Centauri

AlH Lines In The Blue Spectrum Of Proxima Centauri

by Keith CowingSeptember 7, 2022September 7, 2022

Proxima Centauri

A Candidate Short-period Sub-Earth Orbiting Proxima Centauri

by Keith CowingFebruary 11, 2022

Proxima Centauri

Exosphere Modeling of Proxima b: A Case Study of Photochemical Escape with a Venus-like Atmosphere

by Keith CowingSeptember 15, 2021