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Ethan Vishniac 🇺🇦🇨🇦🇺🇸

@ethan-vishniac.bsky.social
1.2K followers 1.1K following 899 posts

Cantankerous astrophysicist and editor. Grandfather and dog owner. I could probably drink less coffee. I think about magnetized turbulence and what it means for the universe. Orcid 0000-0002-2307-3857

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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 11/09/2026
In 2010 I gave some advice to a couple of colleagues over dinner in Bangalore. Two days ago I got quoted (favorably) for it in the Indian Express. It's such a pleasure to see that I got it right, at least that once.
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 07/09/2026
Old dogs club with Amber Szalay and Nipin Vishniac.
Two old dogs resting on a patio.
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 02/09/2026
This is not just about philosophy. www.smbc-comics.com/comic/philos...
smbc-comics.com
Saturday Morning Breakfast Cereal - Philosophy
Saturday Morning Breakfast Cereal - Philosophy
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 27/08/2026
I have lived near Lake Ontario for about twenty years of my life, off and on. It's a good name for a lake.
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 07/03/2025
I can’t believe I have to say this, but.. Don’t say you’re moving to Canada unless you’ve cleared it with the Canadian authorities. Don’t fantasize about how Canadians would vote in US elections. That’s just the flip side of Trump’s ambitions. Finally, don’t laugh. Trump is as serious as death.
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 24/08/2026
youtu.be/uqZ9EOnR6Pg 🔭 AAS Journal Author Series: Emerson Whittaker on 2026PSJ.....7..148W Emerson Whittaker (University of California, Los Angeles) chat about their article on analyzing 1.5 million W3 Wide-field Infrared Survey Explorer (WISE) images acquired between 2010 January 7 1/5
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AAS Journal Author Series: Emerson Whittaker on 2026PSJ.....7..148W
YouTube video by AAS
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The Volatile Mermaid @ohnoshetwitnt.bsky.social · 11/08/2026
The only time Republicans get upset about kids getting shot is when it’s with vaccines.
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Reposted by Ethan Vishniac 🇺🇦🇨🇦🇺🇸
Orcspiration @orcspiration.bsky.social · 10/08/2026
YOUR ENEMIES LAMENT YOUR VERY EXISTENCE. ARE YOU HYDRATED?
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 29/07/2026
youtu.be/I4sw9IsIQ_0 🔭 AAS Journal Author Series: Alejandro Cruz-Osorio on 2026ApJ.1001.227C Alejandro Cruz-Osorio (Universidad Nacional Autónoma de México) chats about his article on the first application of an ab initio approach to the electron temperature derived from microscopic simulations 1/4
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AAS Journal Author Series: Alejandro Cruz-Osorio on 2026ApJ..1001..227C
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 24/07/2026
This is extremely important and gives additional insight (if any were needed) about the proposed OMB rules
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Reposted by Ethan Vishniac 🇺🇦🇨🇦🇺🇸
Prof Anna Watts @profannawatts.bsky.social · 24/07/2026
The Universe has lost a mighty force. Farewell to a dear friend, wonderful scientist, and excellent co-conspirator. www.astronomie.nl/nieuws/en/in...
astronomie.nl
In memoriam Ralph Wijers, astrophysicist (1964–2026)
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 23/07/2026
“The Trump administration hates academic science funding, full stop. They hate where that money goes, and they hate who it goes to. They want to keep all that money for themselves, to hand out to favored cronies who can help them get elected “
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 23/07/2026
Checked the packages in the mailroom for the first time in months, and I found two books explaining gravity to me. This would be great, except that they contradict each other (and GR, but that's a given).
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 21/07/2026
youtu.be/_r0KFK192jA 🔭 AAS Journal Author Series: Luis Zapata and Luis Rodríguez on 2026ApJ...999..219Z Luis Zapata (Universidad Nacional Autónoma de México) and Luis Rodríguez (Universidad Nacional Autónoma de México; Universidad Autónoma de Chiapas) chat about their article 1/4
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AAS Journal Author Series: Luis Zapata and Luis Rodríguez on 2026ApJ...999..219Z
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 14/07/2026
youtu.be/PCdqIf7zgLI 🔭 AAS Journal Author Series: Julien de Wit and Andy Rivkin on 2026ApJ..1003L..21D Julien de Wit (MIT) and Andy Rivkin (Johns Hopkins University Applied Physics Laboratory) chat about their article presenting new JWST/NIRCam observations on near-Earth object 2024 YR4 1/4
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AAS Journal Author Series: Julien de Wit and Andy Rivkin on 2026ApJ..1003L..21D
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 02/07/2026
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 01/07/2026
Happy Canada Day to all who celebrate.
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 01/07/2026
youtu.be/5zF7oWZ954I 🔭 AAS Journal Author Series: Srinivasan Raghunathan on 2026ApJ..1002L..22R Srinivasan Raghunathan (UC Davis) chats about his article on a measurement of the full shape of the power spectrum of the thermal Sunyaev–Zel’dovich (tSZ) effect down to arcminute scales 1/3
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 30/06/2026
youtu.be/qTJn5Rfo568 🔭 AAS Journal Author Series: Zhen Pan and Dong Lai on 2026ApJ..1002L..14P Zhen Pan (Shanghai Jiao-Tong University) chats about his article on the candidate repeating partial tidal disruption events (rpTDEs) has been reported in recent years. 1/3
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AAS Journal Author Series: Zhen Pan and Dong Lai on 2026ApJ..1002L..14P
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 30/06/2026
youtu.be/MWjXuvNK3hM 🔭 AAS Journal Author Series: Zoe Hacksaw on 2025ApJ...995..140H Zoe Hacksaw (UT Austin) chats about her article on a system hosting the most massive known stellar-origin black hole and the lowest-metallicity star yet discovered in orbit around a black hole.
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AAS Journal Author Series: Zoe Hacksaw on 2025ApJ...995..140H
YouTube video by AAS
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Reposted by Ethan Vishniac 🇺🇦🇨🇦🇺🇸
Amanda Kolson Hurley @amandakhurley.bsky.social · 27/06/2026
Incredible chart from @propublica.org. If you don’t follow enviro stuff closely, your instinct might be that the hold-your-nose solution (carbon capture from fossil fuels) would be the “pragmatic” one versus covering Earth in solar panels, which seems utopian. In fact it’s the opposite
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 19/06/2026
youtu.be/yRLSJvFA_5I 🔭 AAS Journal Author Series: Kayla Smith and Mark Marley on 2026ApJ..1000..304S Kayla Smith (University of Arizona) chats about her article on a new set of equilibrium temperature evolution tracks for brown dwarfs that use the outputs of modern brown dwarf evolution models 1/3
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AAS Journal Author Series: Kayla Smith and Mark Marley on 2026ApJ..1000..304S
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 18/06/2026
youtu.be/oe7UkyBKN0A 🔭 AAS Journal Author Series: Mikayla Wilson on 2025AJ....170..357W Mikayla Wilson (UC Santa Cruz) chats about her article on JWST Near-infrared Spectrograph observations of the planetary-mass Y dwarf (T = 250–285 K, M = 6.5 ± 3.5M_Jup′, d = 2.3 pc) WISE J085510.83–071442.5 1/3
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AAS Journal Author Series: Mikayla Wilson on 2025AJ....170..357W
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 18/06/2026
youtu.be/y2m5436s5Vg 🔭 AAS Journal Author Series: Christian Aganze on 2024ApJ...962..151A Christian Aganze (Stanford U., UC San Diego) chats about his article on exploring the prospects for detecting gaps in stellar streams in M31 and other nearby galaxies with resolved stars; 1/2
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AAS Journal Author Series: Christian Aganze on 2024ApJ...962..151A
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 18/06/2026
youtu.be/IDTs0esMIjI 🔭 AAS Journal Author Series: Miranda Pikus and Paul Duffell on 2026ApJ..1002..104P Miranda Pikus and Paul Duffell (Purdue University) chat about their article on how thermal cooling creates structural changes in supernova remnants as they evolve, 1/3
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AAS Journal Author Series: Miranda Pikus and Paul Duffell on 2026ApJ..1002..104P
YouTube video by AAS
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Randall Munroe @xkcd.com · 09/06/2026
Planetary Science xkcd.com/3255/
Comic. [Article titled “Evidence for liquid water on the surface of a terrestrial planet in the habitable zone,” with unreadable text but including pictures of a beach and of people playing on a beach.] [caption] Planetary science journals have asked astronomers to please stop submitting their vacation photos.
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 04/06/2026
youtu.be/qmbQtQ61CGY 🔭 AAS Journal Author Series: Sophie Deam and Michele Bannister on 2026PSJ.....7...88D Sophie Deam (Curtin University, University of Canterbury) and Michele Bannister (University of Canterbury) chat about their article on interstellar comet 2I/Borisov,
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AAS Journal Author Series: Sophie Deam and Michele Bannister on 2026PSJ.....7...88D
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 03/06/2026
youtu.be/vBA9B2MuH8g 🔭 AAS Journal Author Series: Alessandro Mura on 2026PSJ.....7...85M Alessandro Mura (Istituto di Astrofisica e Planetologia Spaziali) chats about his article on the thermal properties of 30 active lava lakes on Io, 1/3
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AAS Journal Author Series: Alessandro Mura on 2026PSJ.....7...85M
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 29/05/2026
This is important and useful.
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Reposted by Ethan Vishniac 🇺🇦🇨🇦🇺🇸
lauren @lauren.rotatingsandwiches.com · 29/05/2026
BREAKING: Janice, last surviving member of rock group Dr. Teeth & the Electric Mayhem, disavows any connections to 250th anniversary concert promoted by WH 👇
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 26/05/2026
youtu.be/aQoe4espVzc 🔭 AAS Journal Author Series: Rosalia O’Brien on 026ApJ..1000....6O Rosalia O’Brien (NASA GSFC; Arizona State University) chats about her article on an improved zodiacal light model that incorporates analytical forms of both the scattering phase function and albedo that 1/4
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AAS Journal Author Series: Rosalia O’Brien on 026ApJ..1000....6O
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 26/05/2026
youtu.be/U3EpiakLGkE 🔭 AAS Journal Author Series: Zachary Way and Sébastien Lépine on 2026AJ....171..252W Zachary Way and Sébastien Lépine (Georgia State University) chat about their article on a method to differentiate binary stars from single-star main-sequence K and M dwarfs 1/3
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AAS Journal Author Series: Zachary Way and Sébastien Lépine on 2026AJ....171..252W
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 26/05/2026
youtu.be/FY6IA7hH6HU 🔭 AAS Journal Author Series: Madeline Lucey and Cecilia Mateu on 2026AJ....171..249L Madeline Lucey (University of Pennsylvania) and Cecilia Mateu (Universidad de la República Iguá) chat about their article on characterizing the three-dimensional density distribution of 1/3
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AAS Journal Author Series: Madeline Lucey and Cecilia Mateu on 2026AJ....171..249L
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 14/05/2026
youtu.be/eewSudl4w34 🔭 AAS Journal Author Series: Julianne Dalcanton on 2026ApJS..283...25D Julianne Dalcanton (Flatiron Institute, U. of Washington) chats about her article on greatly expanding the available Hubble Space Telescope imaging of galaxies drawn from the Arp and Arp–Madore catalogs,
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AAS Journal Author Series: Julianne Dalcanton on 2026ApJS..283...25D
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 11/05/2026
youtu.be/iHERs5D6qhg 🔭 AAS Journal Author Series: Matija Ćuk and Maryame El Moutamid on 2026PSJ.....7...52C Matija Ćuk (SETI Institute) and Maryame El Moutamid (Southwest Research Institute) chat about their article on numerical integrations that show Saturn’s obliquity was likely 1/3
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AAS Journal Author Series: Matija Ćuk and Maryame El Moutamid on 2026PSJ.....7...52C
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 08/05/2026
youtu.be/l3XmhEKcJwM 🔭 AAS Journal Author Series: Sara Morrissey and Adam Burgasser on 2026AJ..171.191M Sara Morrissey (UCSD, U. Notre Dame) and Adam Burgasser (UCSD) chat about their article on near-infrared spectral model fits to seven distant L- and T-type dwarfs observed with the JWST Near
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AAS Journal Author Series: Sara Morrissey and Adam Burgasser on 2026AJ....171..191M
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 08/05/2026
youtu.be/6_wHXoEN15o 🔭 AAS Journal Author Series: Chaucer Langbert and Dániel Apai on 2026PSJ..7.58L Chaucer Langbert and Dániel Apai (U. of Arizona) chat about their article on dynamical simulations to study Earth-like planets with a fourth (potentially strong) generalized climate feedback;
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AAS Journal Author Series: Chaucer Langbert and Dániel Apai on 2026PSJ.....7...58L
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 24/04/2026
youtu.be/qNX_uJvxiKs 🔭 AAS Journal Author Series: Sergei Popov and Galina Lipunova on 2026RNAAS..10...46P Sergei Popov (Sternberg Astronomical Institute) and Galina Lipunova (Max-Planck-Institut für Radioastronomie) chat about their article on a proposal that the recently discovered 1/3
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AAS Journal Author Series: Sergei Popov and Galina Lipunova on 2026RNAAS..10...46P
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 23/04/2026
I read "The Camp of the Saints" when I was in High School. I think I was about 14. (I am now 70.) It was not a formative experience. (thread of indeterminate length)
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 20/04/2026
The American Astronomical Society editorial meeting in Toronto this last weekend. My arms are not actually that long.
A group of astronomers sitting and standing on a hotel staircase.
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 20/04/2026
youtu.be/2QMrDo8P2ME 🔭 AAS Journal Author Series: Eva Laplace and Vincent Bronner on 2026ApJ...998L..40L Eva Laplace (KU Leuven, University of Amsterdam) and Vincent Bronner (Universität Heidelberg) chat about their article on the hydrodynamic evolution of massive red supergiants, 1/2
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AAS Journal Author Series: Eva Laplace and Vincent Bronner on 2026ApJ...998L..40L
YouTube video by AAS
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NY Times Pitchbot @nytpitchbot.bsky.social · 18/04/2026
A peer reviewed study shows a promising link between flu and shingles vaccines and a reduced risk of dementia. A heroin addict who cut off a raccoon’s penis for “further study” says these vaccines cause autism. For busy Americans, it can be hard to know who to trust.
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 14/04/2026
youtu.be/lSJETmzn464 🔭 AAS Journal Author Series: Masahiro Ogihara on 2026ApJ...996...91O Masahiro Ogihara (Shanghai Jiao Tong University) chats about his article on clarifying under what conditions the observed features of orbital period ratios of super-Earths can be explained, 1/2
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AAS Journal Author Series: Masahiro Ogihara on 2026ApJ...996...91O
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 08/04/2026
youtu.be/3XzSGIVlOqw 🔭 AAS Journal Author Series: Zesen Huang on 2026ApJ...999L...4H Zesen Huang (University of California, Los Angeles) chats about his article on in situ evidence of 5 minute p-mode oscillations in the upper solar corona, 1/2
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AAS Journal Author Series: Zesen Huang on 2026ApJ...999L...4H
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 06/04/2026
I don’t know why people are surprised that that US is bombing universities. Is it both cruel and counterproductive? Of course, but I firmly believe that Trump would be totally on board with bombing US universities.
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 06/04/2026
youtu.be/tJ3fORyZnbw AAS Journal Author Series: Tania Barone on 2026AJ....171...57B Tania Barone (Swinburne University of Technology) chats about her article on the ongoing effort to spectroscopically confirm a diverse sample of gravitational lenses with high spatial resolution imaging,1/2
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AAS Journal Author Series: Tania Barone on 2026AJ....171...57B
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 06/04/2026
youtu.be/mfY9k6E1lq0 AAS Journal Author Series: Matteo Cerruti, Annika Rudolph, and Maria Petropoulou on 2026 ApJS..282...22C Matteo Cerruti (Université Paris Cité), Annika Rudolph (Deutsches Elektronen-Synchrotron DESY, Niels Bohr Intl. Acad. and DARK), and Maria Petropoulou (U. of Athens) 1/3
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AAS Journal Author Series: Matteo Cerruti, Annika Rudolph, Maria Petropoulou on 2026ApJS..282...22C
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 06/04/2026
youtu.be/noaAB-o2D7Q AAS Journal Author Series: Crystal Martin on 2026ApJ...997..102M Crystal Martin (University of California Santa Barbara) chats about her article on new JWST/NIRSpec and Keck/LRIS spectra of nine reionization-era Lyα emitters in the redshift z ∼ 7 protocluster LAGER-z7OD1, 1/2
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AAS Journal Author Series: Crystal Martin on 2026ApJ...997..102M
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 06/04/2026
youtu.be/-M8eMq0nS6k Peer Review Workshop at the AAS 248 Meeting in Pasadena on Sunday 14 June 2026 AAS Publishing is delighted to offer a Peer Review Workshop at the AAS 248 Meeting in Pasadena on Sunday 14 June 2026. Apply to attend! aas.org/posts/news/2... .
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Peer Review Workshop at the AAS 248 Meeting in Pasadena on Sunday 14 June 2026
YouTube video by AAS
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Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @ethan-vishniac.bsky.social · 06/04/2026
youtu.be/Y9lW7UBdN7A AAS Journal Author Series: Guilherme Limberg on 2025ApJ...989L..18L Guilherme Limberg (University of Chicago) chats about his article on the discovery of a star with [Fe/H] = −4.82 ± 0.25 and one of the lowest metal mass fractions ever found (Z ≲ 1.0 × 10⁻⁶). 1/3
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AAS Journal Author Series: Guilherme Limberg on 2025ApJ...989L..18L
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