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Sébastien Philippe

@sebphilippe.bsky.social
98 followers 64 following 0 posts

I am an Assistant Professor of Nuclear Engineering and Engineering Physics at UW-Madison.

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Reposted by Sébastien Philippe
The New York Times @nytimes.com · 10/07/2026
The chances of a plutonium leak at the lab that produces America’s nuclear bomb cores are considered minuscule, but an accident is still possible and could lead to more fatalities than previously estimated by the federal government, according to new research.
nyti.ms
U.S. Department of Energy Underestimated Potential Los Alamos Plutonium Leak Danger, Study Finds
An accident at the lab that produces America’s nuclear bomb cores could lead to more fatalities than previously estimated by the federal government, according to new research.
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Reposted by Sébastien Philippe
Dylan Spaulding @dkspaulding.bsky.social · 10/07/2026
A new study shows that the NNSA may severely underestimate the risk from plutonium fires at Los Alamos and Savannah River. Geographic limits are much larger and latent cancer fatalities may be 10-100 times worse than NNSA assumes. 🧵
tandfonline.com
Consequence Analysis of Major Fires at Plutonium Pit Production Facilities
As the United States reestablishes large-scale plutonium pit production, federal agencies have published environmental impact studies estimating radiological consequences from major facility fires ...
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Reposted by Sébastien Philippe
Stephen Schwartz @atomicanalyst.bsky.social · 16/07/2026
This morning in 1945—at 5:29 AM (Mountain War Time)—about 35 miles southeast of Socorro, New Mexico, the nuclear age began with a big bang. Contrary to later widespread assumptions, the area surrounding the remote TRINITY test site was not uninhabited, and the fallout did not drift away harmlessly.
A black and white, high-speed photograph of the Trinity explosion at 0.025 seconds, showing what looks like a very large, slightly irregular bubble with a curtain of dust all around its bottom edge against a pitch dark sky. A scale indicating “100 meters” shows that the fireball was already approximately three times that size.Another black and white photograph of the Trinity explosion a few milliseconds later, showing an almost ghostly mushroom cloud with glowing tendrils rising from the ground above the very bright fireball.A black and white photograph of the Trinity mushroom cloud with the same 100-meter scale, this time at 60 seconds post-detonation, showing a very large and billowy mushroom cloud rising high into the sky. The sky is less black and more gray, illuminated by the light from the cloud.Another black and white photograph of the Trinity mushroom cloud taken some minutes after the previous photograph and showing the ominous looking mushroom cloud at a distance, its top spreading out and merging with regular clouds. With the sun rising, the sky is beginning to illuminate.
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Reposted by Sébastien Philippe
Mackenzie Knight-Boyle @mknight.bsky.social · 02/07/2025
My latest in @postopinions.bsky.social - the 5th installment of our @scientistsorg.bsky.social series "The Next Nuclear Age" How a president might come to launch a nuclear strike Massive thanks to @sebphilippe.bsky.social for helping us model what a nuclear attack on DC might look like ⬇️⬇️
wapo.st
Opinion | How a nuclear attack on the U.S. might unfold, step by step
A scenario of America’s response to an incoming nuclear attack.
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Reposted by Sébastien Philippe
Jon Henley @jonhenley.bsky.social · 27/05/2025
French nuclear agency tried to discredit 2021 research showing its atomic bomb tests in Pacific contaminated many more people than acknowledged - thread (in French, with link to Guardian story)
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Reposted by Sébastien Philippe
Tomas Statius @tomasstatius.bsky.social · 27/05/2025
Pour discréditer #Toxique, notre enquête sur les essais nucléaires avec @sebphilippe.bsky.social, le CEA n'a pas lésiné sur les moyens. Sur @disclosengo.bsky.social @lemonde.fr @theguardian.com, nous révélons les coulisses d'un opé d'influence à près de 90 000 € www.lemonde.fr/politique/ar...
lemonde.fr
Essais nucléaires en Polynésie française : quand le CEA finance un contre-récit sur les contaminations
Une commission d’enquête parlementaire cherche à comprendre si l’Etat a sous-estimé le nombre de victimes pour limiter les indemnisations. En 2022, le Commissariat à l’énergie atomique a déployé une c...
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Reposted by Sébastien Philippe
Sandrine Rousseau @sandrousseau.bsky.social · 21/01/2025
La Polynésie Française a été choisie comme site d’essais nucléaires nombreux durant trente années. Je fais partie de la commission d’enquête sur les conséquences de ces essais. Mes questions à @tomasstatius.bsky.social et Sébastien Philippe. Journaliste et chercheur. youtu.be/FCMvCZV-Jxk?...
youtu.be
Enquête sur les essais nucléaires en Polynésie | Questions de Sandrine Rousseau
YouTube video by Sandrine Rousseau
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