#Plutonium-239
LightNews LightNews
cheeseandjam.bsky.social
So many people are, sadly, unaware that glitter has the same half life as plutonium-239.
October 28, 2026 at 11:15 PM
marleywrites.bsky.social
Quick note guys, estradiol is not plutonium-239 and exposing yourself to slightly more than usual will not make you melt or explode
holybible.bsky.social 🪷 @holybible.bsky.social · 4d
lol instagram just showed me this I’m so glad I’m not one of these people no offense
scared of medicine
October 30, 2026 at 11:50 PM
errantv.bsky.social
Technically we CAN make helium, it just requires us to produce weapons-grade plutonium first (Pu-239 emits LOTS of alpha particles that pick up electrons and form a helium gas that can be harvested)
October 31, 2026 at 8:04 PM
simone-z.mastodon.social.ap.brid.gy
This 3 cm (150 gr!) glowing sphere isn’t burning: it’s a plutonium-238 oxide pellet spontaneously at 1000 degrees ♨️☢️

Unlike plutonium-239, which can sustain chain reactions, controlled radioactive decay of this pellet releases about 62 W of heat […]

[Original post on mastodon.social]
October 30, 2026 at 6:30 AM
radioproletario.bsky.social
A perigosa pressa do governo dos EUA em produzir novos núcleos de plutônio

https://www.peoplesworld.org/article/the-u-s-governments-dangerous-rush-to-produce-new-plutonium-pits/
*A Perigosa Corrida do Governo dos EUA Para Produzir Novos Núcleos de Plutônio
Uma pastilha de dióxido de plutônio-238, usada como fonte de calor e energia, brilha sob sua própria luz. A maioria das armas nucleares possui núcleos esféricos feitos de plutônio-239, com uma coloração cinza típica de metais. | Imagem de domínio público do Departamento de Energia dos EUA Neste verão, a Administração Nacional de Segurança Nuclear (NNSA) reverteu sua decisão inicial…
radioproletario.com
November 4, 2026 at 12:04 AM
byteseu.bsky.social
Fire briefly triggers emergency at US nuclear research lab in South Carolina

https://www.byteseu.com/2482387/

The sprawling complex was once used by the federal government to produce materials for nuclear weapons, primarily tritium and plutonium-239. UNB/ AP 29 October, 2026, 11:30 am Last …
Fire briefly triggers emergency at US nuclear research lab in South Carolina - Bytes Europe
The sprawling complex was once used by the federal government to produce materials for nuclear weapons, primarily tritium and plutonium-239.
www.byteseu.com
October 29, 2026 at 6:26 AM
atomicanalyst.bsky.social
Today in 2000, Congress passed and President Bill Clinton signed the Energy Employees Occupational Illness Compensation Act, providing long-overdue payments and medical benefits to people who mined, milled, or transported uranium for nuclear weapons, or who built, tested, or maintained them.
A black and white photograph of a male uranium miner, likely Navajo, in a mine dumping large pieces of ore from a wheelbarrow into a small railcar for transport to the surface. The miner wears workboots, blue jeans, a white t-shirt, and a hard hat with a lamp, but no other protective clothing. A black and white photograph showing five men wearing respirators, helmets, and head-to-toe white protective suits about to enter a tunnel used to conduct an underground nuclear test to collect debris samples and check monitoring and other equipment. A black and white photograph taken on December 17, 1985, by Robert Del Tredici of a man working at the Feed Materials Production Center in Fernald, Ohio, cutting 14-inch depleted uranium tubes for use as targets the reactors at the Department of Energy’s Savannah River Plant near Aiken, South Carolina, to produce plutonium-239 for nuclear weapons. The man’s overalls, sleeves, and gloves are covered in black uranium dust. He wears eyeglasses (possibly safety glasses) and a cloth cap on his head but no respirator. A color photograph of four white men in dark blue jumpsuits, white baseball-style caps, and heavy work boots, carefully pushing a large white 1.2-Megaton B83 gravity bomb strapped horizontally to a large green dolly into a work area at the Pantex Plant in Amarillo, Texas.
October 30, 2026 at 2:31 PM
ernstghost.bsky.social
Actually the CANDU reactors are perfect for producing weapons grade plutonium 239.
October 26, 2026 at 3:23 AM
aweiss.bsky.social
Heinrich says the bill “will age very well over time.” As written, it will certainly age, locking in data centers and nuclear waste on public lands for generations. After all, the half-life of plutonium-239 is about 24,000 years.

westwise.substack.com/p/the-senate...
The Senate permitting bill would lock in data centers and nuclear waste on public lands. It only gets worse from there
A startup wants 456 nuclear reactors, a fuel plant, and nuclear waste storage on 9,000 acres of public land. The Senate permitting bill would make sure the next president can’t touch it
westwise.substack.com
October 22, 2026 at 5:32 PM
1-800callsol.bsky.social
youtu.be/8fmhaf70Ess

Hey man, I got that plutonium you ordered- Yeah! 235 and 239, just like you wanted, nice and crunchy with an atomic cerulean finish- It's like pop rocks and an energy drink in one!

Check it out!

#factorio #youtube #videogamemods #artist
Positively Plutonium Charged | Ship of Fools (8)
YouTube video by Five 'n Four Tail
youtu.be
October 10, 2026 at 9:08 AM
jtcf.dev
MOX fuel breeder cycle was entirely positive in the Plutonium-238 and Plutonium-239 amounts, and just took more Uranium-238 to run, only requiring a little bit of Plutonium-238 to bootstrap the process.

The changes aim to make the rest of the recipes viable for obtaining Plutonium-239
October 10, 2026 at 8:48 AM
universe17.bsky.social
this is kinda like in a nuclear reactor where you have-
TYLERTFOLSE?!

anyways simon is getting the most, due to radium being ALOT more unstable than uranium or plutonium, uranium 235 has a half life of around 704 million years and plutonium 239 around 24k years. While radium 225 has a half life
October 10, 2026 at 1:33 PM
jtcf.dev
In the new update, Plutonium-239 can initailly be obtained *only* through Advanced nuclear fuel reprocessing. This unlocks nuclear breeding as a trigger unlock instead of taking science packs. Nuclear breeding then allows researching the technologies for uses of Plutonum-239.
October 10, 2026 at 8:48 AM
jtcf.dev
The balance changes are addressing how absolutely busted MOX fuel was. Since it only took Plutonium-238 and Uranium-238 and could be used as a /substitute/ of Plutonium-239 in the breeder reactor, it almost entirely removed the need for advanced nuclear fuel reprocessing.
October 10, 2026 at 8:48 AM
jtcf.dev
MOX fuel only requires the plutonium processing technology as a prerequisite, as it does not depend on Pu-239. It has also been made to produce no waste that you would otherwise need to manage.

This hopefully makes it an option as a more convenient or efficient option for nuclear in space.
October 10, 2026 at 8:48 AM
angrydonkeynews.bsky.social
Plutonium-239 is a radioactive isotope used in nuclear reactors and nuclear weapons. Federal law restricts the import, possession, and transportation of nuclear material, while plutonium is prohibited from being sent through the US mail without authorization.

united24media.com/world/us-man...
US Man Bought Plutonium From Russia and Sold It Online Across America
Jacob D. Miller admitted to illegally importing plutonium from Russia and selling it online to at least 67 customers across the US and abroad.
united24media.com
October 9, 2026 at 5:51 AM
drbooom.bsky.social
This, I know something about.

The Soviets stopped using plutonium 239 in smoke detectors circa 1970s. Those detectors were industrial smoke detectors, not home units.

Why? Cost: They already had plutonium enrichment & purification processes set up. The half-life is 23k versus 0.4K years vs Am241
October 7, 2026 at 2:02 PM
nuclearanthro.bsky.social
Called it. (some predictability here esp given headline; mention of Russia is gratituitous & sensationalizing btw)

Jackass ran "Collect Periodic Table" & sold for $500 Pu from claimed Russian smoke detectors to "at least" 67 people in 3+ years.

enabled thallium murder.

Had CSAM (again).
Jacob Miller, 44, had sold the material to dozens of customers through a business he operated from his home, prosecutors alleged. A man in Massachusetts has pleaded guilty to charges of importing and selling plutonium obtained from Russia and mailing the material, as well as other toxic hazardous substances, to customers in the United States and abroad, federal prosecutors said. The man, Jacob D. Miller, 44, had been charged last year with importing nuclear material without lawful authority, mailing hazardous materials and possessing child pornography, the United States Attorney’s Office for the District of Massachusetts said in a statement. Also, because Miller had previous felony convictions, he faced charges for possessing ammunition and explosive materials, the prosecutors said. Miller agreed to the plea in September, the documents show. Because he had earlier felony convictions, the nuclear material count and the child pornography charge could each lead to a sentence of up to 20 years in prison. U.S. District Court Judge Mark G. Mastroianni scheduled a sentencing hearing on Jan. 21, 2027. Mr. Miller’s lawyer, Charles Dolan, could not be reached for comment on Tuesday. On April 8, 2025, the authorities conducted a search warrant at Mr. Miller’s home in South Hadley. They found ammunition, six firearms, explosive materials, hazardous chemicals, plutonium and child sexual abuse materials, the filing said. Mr. Miller has been in federal custody since his arrest on April 9, 2025. He was indicted by a grand jury on April 17, 2025, court documents show. Prosecutors alleged at that time that Mr. Miller had a “long-standing and unlawful obsession with explosives, dangerous chemicals, and radioactive substances.” According to prosecutors, Mr. Miller had state convictions in Massachusetts in 2004. He was sentenced to seven years of probation for possessing child pornography, and one and a half years in prison and 10 years of probation for possessing an explosive device In 2017, he started a business called “Collect the Periodic Table,” from his home, prosecutors said. It advertised the sale of “every collectible element sample and even some rare and hard to find ones,” including what it called a sample from a “cold war era smoke detector source” for $500, the document said. The sales included plutonium- 239, a toxic radioactive material, that he imported from a seller in St. Petersburg, Russia, it said. Plutonium-239, an isotope of plutonium, can be used as a fissile material for nuclear energy reactors and weapons. But doing so requires significant quantities of purified material. The authorities did not say how much plutonium Mr. Miller had acquired. From Dec. 30, 2020, through March 31, 2025, he sold the substance through the mail to at least 67 customers in the United States, Canada, Japan and Switzerland. He also sold thallium, a highly toxic metallic element, prosecutors said, to 71 customers. On April 5, 2025, PayPal records show that Mr. Miller sold two five-gram units of thallium to a man named Stuart Hanmer in Minnesota, who provided a “lethal amount” of thallium to his roommate, the court document said. Mr. Hanmer, who also purchased thallium from other sources, was indicted last October for the murder of his roommate, the authorities in Minnesota said in a statement.
October 7, 2026 at 2:20 AM
drbooom.bsky.social
...sale of “every collectible element sample and even some rare and hard to find ones,” including what it called a sample from a “cold war era smoke detector source” for $500, the document said. The sales included plutonium-239 [...] that he imported from a seller in St. Petersburg, Russia, it said.
October 7, 2026 at 4:17 PM
orangeflavored.bsky.social
here are the instructions dude:
www.reddit.com/r/VRGaming/s...
plutonium-239's comment on "Titanfall 2 VR Mod is OUT and it's LEGENDARY!"
Explore this conversation and more from the VRGaming community
www.reddit.com
October 5, 2026 at 7:19 PM
befunkin.bsky.social
Why are we going to war with Iran over enriched uranium??

The nuclear core / trigger of EVERY nuclear weapon in the U.S. arsenal is plutonium-239 not enriched uranium.

Concerns over Iran’s uranium enrichment is a red herring.

Something isn’t right here.

ubere.substack.com/p/why-the-fo...
Why the Focus on Iran’s Highly Enriched Uranium?
I have a bachelor’s degree in physics.
ubere.substack.com
October 3, 2026 at 9:23 AM
r0butch.5hotgundyk3.love
smoking on that enriched uranium pack. doing lines of plutonium-239. fucked up off a hit of straight lithium-6 decay.
factpostnews.bsky.social FactPost @factpostnews.bsky.social · Oct 2
Trump on Iran: "They were nuclear and drug. They were doing drugs but they were doing the nuclear. But these drug factories slash nuclear factories were hit so hard."
October 2, 2026 at 1:13 PM
befunkin.bsky.social
Again, why are we going to war with Iran over enriched uranium??

The fission core (the nuclear trigger) of EVERY nuclear weapon in the U.S. arsenal is plutonium-239 not uranium-235.

Concerns over Iran’s uranium enrichment is a red herring.

Something isn’t right here.

substack.com/home/post/p-...
Why the Focus on Iran’s Highly Enriched Uranium?
I have a bachelor’s degree in physics.
substack.com
September 29, 2026 at 5:45 AM
befunkin.bsky.social
Here’s the question here: why are we going to war over enriched uranium??

The fission core (the nuclear trigger) of EVERY nuclear weapon in the U.S. arsenal is plutonium-239 not uranium-235.

Something isn’t adding up here.

substack.com/home/post/p-...
Why the Focus on Iran’s Highly Enriched Uranium?
I have a bachelor’s degree in physics.
substack.com
September 29, 2026 at 5:34 AM
lemmy.ml.web.brid.gy
Plutonium-239 - Arch Linux made unbreakable and lightning fast. Initial in-development release, announced here on Lemmy first.
submitted by yxc999 to linux 56 points | 17 comments https://pu-239.org/ 19 days ago I announced my plans here on Lemmy and after four weeks and ~300 hours in total, I can finally share the first ISO of my project with this community. ~~“sometime next week” yeah that was optimistic lmao~~ I want to thank you again for the feedback on the initial announcement and I can say I tried my best to address and implement a lot of your suggestions! For the people that haven’t read the last post, this is the basic gist of it: Unlike immutable distributions that lock you out of the native package manager and force you into sandboxes, Plutonium-239 keeps the core Arch experience intact. You still get the bleeding-edge Arch repositories and the power of the AUR but all of that with a 5-20% performance boost from a heavily optimized kernel and the peace of mind of an unbreakable safety net underneath. For the ISO and the in-depth technical documentation, please visit my website at the link in the title! **The 0.0.1 version is a pre-release/in-development version meant for experienced people interested in this project.** I tested it extensively and I’m running it for a few days now on my Thinkpad myself, however I can IN NO WAY guarantee that this is 100% viable to daily-drive just yet. I’m very thankful for every person that considers testing this distro in a VM or on a secondary PC to contribute to the development of this project. Any feedback is appreciated and I hope my work can be of value to you! Edit: from the feedback that was pm’d to me so far it seems like it’s working fine when it’s running but two people had issues with the hardware detection during the install. If you are experiencing a similar issue, please send me your hardware specs and the output of the log where it failed and I’ll be able to make it more robust!
lemmy.ml
September 24, 2026 at 1:51 AM