Epsilon Canis Majoris: The Brightest Extreme-ultraviolet Source with Surprisingly Low Interstellar Absorption by J. Michael Shull, Rachel M. Curran, Michael W. Topping

“…With its 27.3 ± 0.4 km s ^−1 heliocentric radial velocity and small proper motion, ϵ CMa passed within 9.3 ± 0.5 pc of the Sun 4.4 Myr ago, with a 180 times higher photoionization rate.…”
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Stellar X-Ray Variability and Planetary Evolution in the DS Tucanae System by George W. King, Lía R. Corrales, Vincent Bourrier, Leonardo A. Dos Santos, Lauren Doyle, Baptiste Lavie, Gavin Ramsay, Peter J. Wheatley

“…We present an analysis of four Chandra observations of the 45 Myr old DS Tuc binary system. We observed X-ray variability of both stars on timescales from hours to months, including two strong X-ray flares from star A. …”
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Minor-merger-induced Star Formation Rejuvenation in an Elliptical Radio-loud Quasar Host, 3C 59 by Yijun Wang, Tao Wang, Ke Xu, Junjie Mao, Yerong Xu, Zheng Zhou

“…The inferred star formation history of 3C 59 has shown significant star formation rejuvenation within the past 500 Myr, before which it remained rather quiescent for most of the cosmic time. …”
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Figuring Out Gas and Galaxies In Enzo (FOGGIE). VIII. Complex and Stochastic Metallicity Gradients at z > 2 by Ayan Acharyya, Molly S. Peeples, Jason Tumlinson, Brian W. O’Shea, Cassandra Lochhaas, Anna C. Wright, Raymond C. Simons, Ramona Augustin, Britton D. Smith, Eugene Hyeonmin Lee

“…By tracking the metallicity gradient at a rapid cadence of simulation outputs (∼5–10 Myr), we find that theoretical gradients are highly stochastic: the FOGGIE galaxies spend ∼30%–50% of their time far away from a smoothed trajectory inferred from analytic models or other, less high-cadence simulations. …”
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Pathogenic potential of ornithogenic <i>Escherichia coli</i> strains detected in the Earth's polar regions by Batyrbek I. Aslanov, Daniil V. Azarov, Maria A. Makarova, Elizaveta G. Marysheva, Lyudmila A. Kraeva, Aleksey S. Mokhov, Ekaterina A. Lebedeva, Nikita E. Goncharov, Natalya V. Lebedeva, Dmitry A. Starikov, Victoria V. Kolodzhieva, Dmitry E. Polev, Artemy E. Goncharov

“…For example, cgST 133718 was observed in Antarctica (strain 17_1myr) and in the UK, and sequence 11903, to which strain 32-1 from the northernmost point of Novaya Zemlya belonged, was previously identified in the USA. …”
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History and Habitability of the LP 890-9 Planetary System by Rory Barnes, Laura N. R. do Amaral, Jessica Birky, Ludmila Carone, Peter Driscoll, Joseph R. Livesey, David Graham, Juliette Becker, Kaiming Cui, Martin Schlecker, Rodolfo Garcia, Megan Gialluca, Arthur Adams, MD Redyan Ahmed, Paul Bonney, Wynter Broussard, Chetan Chawla, Mario Damasso, William C. Danchi, Russell Deitrick, Elsa Ducrot, Emeline F. Fromont, Brandt A. L. Gaches, Sakshi Gupta, Michelle L. Hill, James A. G. Jackman, Estelle M. Janin, Mikołaj Karawacki, Matheus Daniel Koren, Roberto La Greca, Michaela Leung, Arturo Miranda-Rosete, Michael Kent A. Olohoy, Cecelia Ngo, Daria Paul, Chandan Kumar Sahu, Debajyoti Basu Sarkar, Mohammad Afzal Shadab, Edward W. Schwieterman, Melissa Sedler, Katie Texeira, Allona Vazan, Karen N. Delgado Vega, Rohit Vijayakumar, Jonathan T. Wojack

“…We find the magma ocean stage can last up to 50 Myr, remove eight Earth oceans of water, and leave up to 2000 bars of oxygen in the atmosphere. …”
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