Schrödinger’s microbes: Tools for distinguishing the living from the dead in microbial ecosystems by Joanne B. Emerson, Rachel I. Adams, Clarisse M. Betancourt Román, Brandon Brooks, David A. Coil, Katherine Dahlhausen, Holly H. Ganz, Erica M. Hartmann, Tiffany Hsu, Nicholas B. Justice, Ivan G. Paulino-Lima, Julia C. Luongo, Despoina S. Lymperopoulou, Cinta Gomez-Silvan, Brooke Rothschild-Mancinelli, Melike Balk, Curtis Huttenhower, Andreas Nocker, Parag Vaishampayan, Lynn J. Rothschild

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Ideas and perspectives: hydrothermally driven redistribution and sequestration of early Archaean biomass – the “hydrothermal pump hypothesis” by J.-P. Duda, J.-P. Duda, V. Thiel, T. Bauersachs, H. Mißbach, H. Mißbach, M. Reinhardt, M. Reinhardt, N. Schäfer, N. Schäfer, M. J. Van Kranendonk, M. J. Van Kranendonk, M. J. Van Kranendonk, J. Reitner, J. Reitner

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The Epoch of Giant Planet Migration Planet Search Program. II. A Young Hot Jupiter Candidate around the AB Dor Member HS Psc by Quang H. Tran, Brendan P. Bowler, William D. Cochran, Samuel Halverson, Suvrath Mahadevan, Joe P. Ninan, Paul Robertson, Guđmundur Stefánsson, Ryan C. Terrien

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Lower viral evolutionary pressure under stable versus fluctuating conditions in subzero Arctic brines by Zhi-Ping Zhong, Dean Vik, Josephine Z. Rapp, Olivier Zablocki, Heather Maughan, Ben Temperton, Jody W. Deming, Matthew B. Sullivan

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Applying Novel Techniques from Physical and Biological Sciences to Life Detection by Tony Z. Jia, Chaitanya Giri, Andrea Aldaba, Ilknur Bahcivan, Nipun Chandrasiri, Ilankuzhali Elavarasan, Kashish Gupta, Sakshi P. Khandare, Christos Liaconis, Arpita Saha, Orlando J. Solórzano, Paola Ines Tiranti, Aivaras Vilutis, Graham E. Lau

“…As such, a number of so-called life detection technologies, instruments, and approaches have been applied as part of past, current, and future space missions. As astrobiology is a truly interdisciplinary field within the realm of space exploration with major contributions from physical and biological sciences (among others), recently there has been development of a number of relevant techniques from scientific fields that have yet to be fully applied to extraterrestrial life detection. …”
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Direct Simulation Monte Carlo Modeling of Ammonia in Comet C/2014 Q2 (Lovejoy) by Hideyo Kawakita, Neil Dello Russo, Ronald J. Vervack Jr., Michael A. DiSanti, Boncho P. Bonev, Hitomi Kobayashi, Daniel C. Boice, Yoshiharu Shinnaka

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ExoplanetSat: Detecting transiting exoplanets using a low-cost CubeSat platform by Smith, Matthew William, Seager, Sara, Pong, Christopher Masaru, Villasenor, Jesus Noel Samonte, Knapp, Mary E., Farmer, Grant Trapnell, Jensen-Clem, Rebecca M., Ricker, George R, Miller, David W

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Evaluation of a Surface Exploration Traverse Analysis and Navigation Tool by Gilkey, Andrea L., Galvan, Raquel Christine, Johnson, Aaron William, Kobrick, Ryan L., Hoffman, Jeffrey A., Melo, Paulo L., Newman, Dava

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Algoriphagus machipongonensis sp. nov., co-isolated with a colonial choanoflagellate by Alegado, Rosanna A., Grabenstatter, Jonathan Dean, Zuzow, Richard, Morris, Andrea, Huang, Sherri Y., King, Nicole, Summons, Roger E

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MAIN-BELT COMET P/2012 T1 (PANSTARRS) by Hsieh, Henry H., Kaluna, Heather M., Novaković, Bojan, Yang, Bin, Haghighipour, Nader, Micheli, Marco, Denneau, Larry, Fitzsimmons, Alan, Jedicke, Robert, Kleyna, Jan, Vereš, Peter, Wainscoat, Richard J., Ansdell, Megan, Elliott, Garrett T., Keane, Jacqueline V., Meech, Karen J., Moskovitz, Nicholas, Riesen, Timm E., Sheppard, Scott S., Sonnett, Sarah, Tholen, David J., Urban, Laurie, Kaiser, Nick, Chambers, K. C., Burgett, William S., Magnier, Eugene A., Morgan, Jeffrey S., Price, Paul A.

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Stable isotope labeling confirms mixotrophic nature of streamer biofilm communities at alkaline hot springs by Schubotz, Florence, Hays, Lindsay E., Meyer-Dombard, D'Arcy R., Gillespie, Aimee, Shock, Everett L., Summons, Roger E

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Detection of biosignatures in Terrestrial analogs of Martian regions: Strategical and technical assessments by JianXun Shen, Yan Chen, Yu Sun, Li Liu, YongXin Pan, Wei Lin

“…Due to the high costs of direct exploration of Mars, Mars-like regions on Earth have been invaluable targets for astrobiological research, places where scientists could practice the search for “biosignatures” and refine ways to detect them. …”
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The Global Search for Liquid Water on Mars from Orbit: Current and Future Perspectives by Roberto Orosei, Chunyu Ding, Wenzhe Fa, Antonios Giannopoulos, Alain Hérique, Wlodek Kofman, Sebastian E. Lauro, Chunlai Li, Elena Pettinelli, Yan Su, Shuguo Xing, Yi Xu

“…Due to its significance in astrobiology, assessing the amount and state of liquid water present on Mars today has become one of the drivers of its exploration. …”
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Earth as a Transiting Exoplanet: A Validation of Transmission Spectroscopy and Atmospheric Retrieval Methodologies for Terrestrial Exoplanets by Jacob Lustig-Yaeger, Victoria S. Meadows, David Crisp, Michael R. Line, Tyler D. Robinson

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Enhanced Bacterial Growth and Gene Expression of D-Amino Acid Dehydrogenase With D-Glutamate as the Sole Carbon Source by Takeshi Naganuma, Takeshi Naganuma, Takeshi Naganuma, Yoshiakira Iinuma, Hitomi Nishiwaki, Ryota Murase, Kazuo Masaki, Ryosuke Nakai, Ryosuke Nakai

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The Future of Origin of Life Research: Bridging Decades-Old Divisions by Martina Preiner, Silke Asche, Sidney Becker, Holly C. Betts, Adrien Boniface, Eloi Camprubi, Kuhan Chandru, Valentina Erastova, Sriram G. Garg, Nozair Khawaja, Gladys Kostyrka, Rainer Machné, Giacomo Moggioli, Kamila B. Muchowska, Sinje Neukirchen, Benedikt Peter, Edith Pichlhöfer, Ádám Radványi, Daniele Rossetto, Annalena Salditt, Nicolas M. Schmelling, Filipa L. Sousa, Fernando D. K. Tria, Dániel Vörös, Joana C. Xavier

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Revisiting the Helium and Hydrogen Accretion Indicators at TWA 27B: Weak Mass Flow at Near-freefall Velocity by Gabriel-Dominique Marleau, Yuhiko Aoyama, Jun Hashimoto, Yifan Zhou

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Decline in oceanic sulfate levels during the early Mesoproterozoic by Luo, Genming, Ono, Shuhei, Huang, Junhua, Algeo, Thomas J., Li, Chao, Zhou, Lian, Robinson, Andrew, Lyons, Timothy W., Xie, Shucheng

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Organic geochemistry of the early Toarcian oceanic anoxic event in Hawsker Bottoms, Yorkshire, England by Trabucho-Alexandre, J., French, Katherine L., Grocke, D. R., Sepulveda, Julio C, Summons, Roger E

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Occurrence Rate of Hot Jupiters Around Early-type M Dwarfs Based on Transiting Exoplanet Survey Satellite Data by Tianjun Gan, Sharon X. Wang, Songhu Wang, Shude Mao, Chelsea X. Huang, Karen A. Collins, Keivan G. Stassun, Avi Shporer, Wei Zhu, George R. Ricker, Roland Vanderspek, David W. Latham, Sara Seager, Joshua N. Winn, Jon M. Jenkins, Khalid Barkaoui, Alexander A. Belinski, David R. Ciardi, Phil Evans, Eric Girardin, Nataliia A. Maslennikova, Tsevi Mazeh, Aviad Panahi, Francisco J. Pozuelos, Don J. Radford, Richard P. Schwarz, Joseph D. Twicken, Anaël Wünsche, Shay Zucker

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