April 5, 2021 updates Posted on April 5, 2021 by Doug Loss 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