Interstellar Updates These are items of interest to the interstellar exploration community that we’ve found in our quest for information that will help us advance toward our goals. If you know of anything we’ve overlooked, or any sources of such information we should monitor, or if you would like to be added to our IRG-updates mailing list and receive these updates in you email every weekday, please send that information to info@irg.space. You can now search our database of interstellar updates and find items of interest to you. April 9, 2021 updates Revision of “Dependence of climate states of gray atmosphere on solar constant: From the runaway greenhouse to the snowball states” by Ishiwatari et al. (2007) https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2019JD031761 Discovery of the First Interstellar Comet and the Spatial Density of Interstellar Objects in the Solar Neighborhood https://link.springer.com/article/10.1134%2FS0038094621020027 Extending a grid of hydrodynamic planetary upper atmosphere models https://arxiv.org/abs/2104.03796 The Trouble with “Puddle Thinking”: A User’s Guide to the Anthropic Principle https://arxiv.org/abs/2104.03381 April 8, 2021 updates Irradiance Variations of the Sun and Sun-Like Stars – Overview of Topical Collection https://link.springer.com/article/10.1007/s11207-021-01802-8 Five carbon- and nitrogen-bearing species in a hot giant planet’s atmosphere https://www.nature.com/articles/s41586-021-03381-x Transit Analysis of HATS-4 b by Citizen Scientists https://iopscience.iop.org/article/10.3847/2515-5172/abf496 Quantifying the Classification of Exoplanets: in Search for the Right Habitability Metric https://arxiv.org/abs/2104.02991 RAFTER: Ring Astrometric Field Telescope for Exo-planets and Relativity https://arxiv.org/abs/2104.03003 A transit timing variation observed for the long-period extremely low density exoplanet HIP 41378 https://arxiv.org/abs/2104.03159 April 7, 2021 updates A search for a fifth planet around HR 8799 using the star-hopping RDI technique at VLT/SPHERE https://www.aanda.org/articles/aa/full_html/2021/04/aa38794-20/aa38794-20.html Wide-orbit exoplanets are common. Analysis of nearly 20 years of OGLE microlensing survey data https://arxiv.org/abs/2104.02079 OGLE-2018-BLG-1185b : A Low-Mass Microlensing Planet Orbiting a Low-Mass Dwarf https://arxiv.org/abs/2104.02157 Significant improvement in planetary system simulations from statistical averaging https://arxiv.org/abs/2104.02179 Large density deficit of Earth’s core revealed by a multi-megabar primary pressure scale https://arxiv.org/abs/2104.02076 April 6, 2021 updates High-Accuracy Thrust Measurements of the EMDrive and Elimination of False-Positive Effects https://www.researchgate.net/publication/350108418_High-Accuracy_Thrust_Measurements_of_the_EMDrive_and_Elimination_of_False-Positive_Effects Evolutionary Panspermia: Planets Micro-Life and Beyond https://www.researchgate.net/publication/349704978_Evolutionary_Panspermia_Planets_Micro-Life_and_Beyond Efficiency of the oxygenic photosynthesis on Earth-like planets in the habitable zone https://arxiv.org/abs/2104.01425 Of Aliens and Exoplanets: Why the search for life, probably, requires the search for water https://arxiv.org/abs/2104.01683 Warm Jupiters in TESS Full-Frame Images: A Catalog and Observed Eccentricity Distribution for Year 1 https://arxiv.org/abs/2104.01970 High pCO2 reduces sensitivity to CO2 perturbations on temperate, Earth-like planets throughout most of habitable zone https://arxiv.org/abs/2104.01224 April 5, 2021 updates Solar Sail Propulsion by 2050: An Enabling Capability for Heliophysics Missions https://www.hou.usra.edu/meetings/helio2050/pdf/4009.pdf NASA’s Space Launch System Capabilities for Ultra-High C3 Missions https://www.hou.usra.edu/meetings/helio2050/pdf/4057.pdf Ectogenesis for survival in deep space and deep time: reply to Gale and Wandel https://www.cambridge.org/core/journals/international-journal-of-astrobiology/article/ectogenesis-for-survival-in-deep-space-and-deep-time-reply-to-gale-and-wandel/0F9D05DD3756DA66799658F8959C1775 Near-term self-replicating probes – A concept design https://www.sciencedirect.com/science/article/abs/pii/S009457652100117X Astrobiology of life on Earth https://sfamjournals.onlinelibrary.wiley.com/doi/10.1111/1462-2920.15499 Magnetic and tidal migration of close-in planets. Influence of secular evolution on their population https://arxiv.org/abs/2104.01004 TRAPPIST Habitable Atmosphere Intercomparison (THAI) workshop report https://arxiv.org/abs/2104.01091 1 2 … 162 Next →
April 9, 2021 updates Revision of “Dependence of climate states of gray atmosphere on solar constant: From the runaway greenhouse to the snowball states” by Ishiwatari et al. (2007) https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2019JD031761 Discovery of the First Interstellar Comet and the Spatial Density of Interstellar Objects in the Solar Neighborhood https://link.springer.com/article/10.1134%2FS0038094621020027 Extending a grid of hydrodynamic planetary upper atmosphere models https://arxiv.org/abs/2104.03796 The Trouble with “Puddle Thinking”: A User’s Guide to the Anthropic Principle https://arxiv.org/abs/2104.03381
April 8, 2021 updates Irradiance Variations of the Sun and Sun-Like Stars – Overview of Topical Collection https://link.springer.com/article/10.1007/s11207-021-01802-8 Five carbon- and nitrogen-bearing species in a hot giant planet’s atmosphere https://www.nature.com/articles/s41586-021-03381-x Transit Analysis of HATS-4 b by Citizen Scientists https://iopscience.iop.org/article/10.3847/2515-5172/abf496 Quantifying the Classification of Exoplanets: in Search for the Right Habitability Metric https://arxiv.org/abs/2104.02991 RAFTER: Ring Astrometric Field Telescope for Exo-planets and Relativity https://arxiv.org/abs/2104.03003 A transit timing variation observed for the long-period extremely low density exoplanet HIP 41378 https://arxiv.org/abs/2104.03159
April 7, 2021 updates A search for a fifth planet around HR 8799 using the star-hopping RDI technique at VLT/SPHERE https://www.aanda.org/articles/aa/full_html/2021/04/aa38794-20/aa38794-20.html Wide-orbit exoplanets are common. Analysis of nearly 20 years of OGLE microlensing survey data https://arxiv.org/abs/2104.02079 OGLE-2018-BLG-1185b : A Low-Mass Microlensing Planet Orbiting a Low-Mass Dwarf https://arxiv.org/abs/2104.02157 Significant improvement in planetary system simulations from statistical averaging https://arxiv.org/abs/2104.02179 Large density deficit of Earth’s core revealed by a multi-megabar primary pressure scale https://arxiv.org/abs/2104.02076
April 6, 2021 updates High-Accuracy Thrust Measurements of the EMDrive and Elimination of False-Positive Effects https://www.researchgate.net/publication/350108418_High-Accuracy_Thrust_Measurements_of_the_EMDrive_and_Elimination_of_False-Positive_Effects Evolutionary Panspermia: Planets Micro-Life and Beyond https://www.researchgate.net/publication/349704978_Evolutionary_Panspermia_Planets_Micro-Life_and_Beyond Efficiency of the oxygenic photosynthesis on Earth-like planets in the habitable zone https://arxiv.org/abs/2104.01425 Of Aliens and Exoplanets: Why the search for life, probably, requires the search for water https://arxiv.org/abs/2104.01683 Warm Jupiters in TESS Full-Frame Images: A Catalog and Observed Eccentricity Distribution for Year 1 https://arxiv.org/abs/2104.01970 High pCO2 reduces sensitivity to CO2 perturbations on temperate, Earth-like planets throughout most of habitable zone https://arxiv.org/abs/2104.01224
April 5, 2021 updates Solar Sail Propulsion by 2050: An Enabling Capability for Heliophysics Missions https://www.hou.usra.edu/meetings/helio2050/pdf/4009.pdf NASA’s Space Launch System Capabilities for Ultra-High C3 Missions https://www.hou.usra.edu/meetings/helio2050/pdf/4057.pdf Ectogenesis for survival in deep space and deep time: reply to Gale and Wandel https://www.cambridge.org/core/journals/international-journal-of-astrobiology/article/ectogenesis-for-survival-in-deep-space-and-deep-time-reply-to-gale-and-wandel/0F9D05DD3756DA66799658F8959C1775 Near-term self-replicating probes – A concept design https://www.sciencedirect.com/science/article/abs/pii/S009457652100117X Astrobiology of life on Earth https://sfamjournals.onlinelibrary.wiley.com/doi/10.1111/1462-2920.15499 Magnetic and tidal migration of close-in planets. Influence of secular evolution on their population https://arxiv.org/abs/2104.01004 TRAPPIST Habitable Atmosphere Intercomparison (THAI) workshop report https://arxiv.org/abs/2104.01091
