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Sean McMahon

@seanhmcmahon.bsky.social

324 Following418 Followers

Astro/geo/palaeo/biologist @ UK Centre for Astrobiology, University of Edinburgh: https://www.astrobiology.ac.uk/mcmahon-group

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@seanhmcmahon.bsky.socialOct 11, 2026, 9:49 AM

I would have done the same!

@seanhmcmahon.bsky.socialOct 10, 2026, 7:40 PM

Beauts!

@eddavey.libdems.org.ukOct 9, 2026, 7:26 PMReposted by @seanhmcmahon.bsky.social

Wow. Donald Trump is giving money to Putin’s war machine so he can keep killing innocent Ukrainians and attacking democracies across Europe. The UK must lead a coalition of the willing that stands up and says no.

@seanhmcmahon.bsky.socialOct 8, 2026, 6:14 PM

Were animal tissues once non-biodegradable? Congratulations to @philvixseboxse.bsky.social and team for this fab paper (to which my contributions were surely the least of all the authors). See Phil's thread for full story.

@seanhmcmahon.bsky.socialOct 6, 2026, 9:28 PM

So beautiful!

@drdeanburnett.bsky.socialOct 6, 2026, 7:36 AMReposted by @seanhmcmahon.bsky.social

"By using AI, tasks like essays that used to take hours can be completed in minutes!" Sure, like how if I arrive at the gym and immediately go for a shower, my workout is done in record time. And if I throw my sandwiches straight in the bin, I can finish my lunch in under 10 seconds.

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@seanhmcmahon.bsky.socialOct 5, 2026, 12:09 PM

Fabulous new preprint from some of my favourite scientists

@seanhmcmahon.bsky.socialOct 3, 2026, 4:17 PM

Interesting postdoctoral fellowship opportunity in the origins of life at the University of Chicago. See details here: academicjobsonline.org/ajo/jobs/32894

Job advert with the following text: The Chicago Center for the Origins of Life at the University of Chicago invites applications for the Origins of Life Research Fellowship program. We seek exceptional early-career scientists to join our interdisciplinary research environment focused on understanding how life developed on Earth and the potential for life elsewhere in the universe. Successful applicants will be appointed to renewable, one-year terms for up to four years. Fellows will receive a competitive salary and benefits, along with an independent fund to support their research and professional development.
The Chicago Center for the Origins of Life brings together scientists of all career stages across the University of Chicago – primarily from the Departments of Astronomy and Astrophysics, Chemistry, the Geophysical Sciences, and Physics – to promote, encourage, and support fundamental research in these origins-related fields, train early-career scientists in cross-disciplinary scientific exploration, and foster a community of innovative thinkers that will push traditional disciplinary boundaries to answer questions regarding the history and future of life in the universe.
This Fellowship is designed to support early-career scientists who wish to carry out cutting-edge research in collaboration with our existing groups and programs. Ongoing research activities include studies in the broad areas of prebiotic chemistry, the development and evolution of the first protocells on Earth, and the formation and characterization of potentially habitable environments in our Solar System and beyond. While we support work in these general areas, we are particularly interested in scientists who are interested in expanding their expertise by working at the intersection of different research programs. Application information and submission can be found online at AcademicJobsOnline.org:
https://academicjobsonline.org/ajo/jobs/32894 or scanning the QR code
@seanhmcmahon.bsky.socialOct 2, 2026, 5:14 PM

Looks like a great opportunity!

@pbump.comSep 28, 2026, 4:30 PMReposted by @seanhmcmahon.bsky.social

pretty sure "lands" is the wrong word here for at least two reasons

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@jeffsharlet.bsky.socialSep 29, 2026, 11:43 AMReposted by @seanhmcmahon.bsky.social

I give up. I’m moving into a cave.

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@theplanetaryguy.comSep 28, 2026, 4:44 PMReposted by @seanhmcmahon.bsky.social

This is a photo of our home planet taken only a few hours ago! So what? We have photos of Earth taken from space every day. Ah, but *this* photo was taken by a spacecraft ON ITS WAY TO JUPITER.

From the source: "Mostly black space, most of Earth visible at the top right of the image. Part of a spacecraft visible on the left."
@seanhmcmahon.bsky.socialSep 28, 2026, 4:21 PM

I'm striking this week. A real pity to have to do this again.

@seanhmcmahon.bsky.socialSep 27, 2026, 4:48 PM

Oh my god it’s beautiful! Look at that lovely golden colour!

@seanhmcmahon.bsky.socialSep 25, 2026, 3:57 PM

... and UK higher education, which is similarly imperilled.

@ryannorth.caSep 23, 2026, 1:26 PMReposted by @seanhmcmahon.bsky.social

Pompeii is a UNESCO world heritage site not because it was remarkable in its prime, but because it survived to our era untouched: one moment, preserved for all time. But future generations won't know what OUR world was like unless we do the same. This is why we MUST bury Toronto with a volcano

Picture of the streets of Pompeii, from https://commons.wikimedia.org/wiki/File:Pompei_-_panoramio_(26).jpg. Taken by Tanya Dedyukhina, used under CC
@seanhmcmahon.bsky.socialSep 22, 2026, 8:19 AM

Cool! Would you mind adding our programme? study.ed.ac.uk/programmes/p...

@seanhmcmahon.bsky.socialSep 15, 2026, 7:47 PM

Thank you very much, Duncan! :-)

@stuartatkinson.bsky.socialSep 14, 2026, 9:40 AMReposted by @seanhmcmahon.bsky.social

Mars has some spectacularly insanely huge features - towering volcanoes, deep valleys, vast deserts - but kneel down in the cinnamon-hued dust and you'll also see it has exquisitely beautiful smaller features on its surface too... Sept 14th Curiosity images credit: NASA/JPL-Caltech/S Atkinson

@emmasartworks.bsky.socialSep 13, 2026, 9:47 AMReposted by @seanhmcmahon.bsky.social

Never mind the Bayeux Tapestry, look at the Seaton Snail Weaving! (I believe the script is known as Molluscule, but researchers have been unable to interpret the meaning 😉

Snail trails on a sandy beach in northeast England Snail trails on a sandy beach in northeast England Snail trails on a sandy beach in northeast England Snail trails on a sandy beach in northeast England
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