Yeah, it’s quieter so there’s fewer overall responses even in “popular” posts, but it doesn’t feel like anything gets ignored. If a post is interesting, you’ll get at least a few replies even if it takes a few days.
That part is kinda nice - the lower turnover on the “front page” means you’ll have people reading and commenting on discussions for days. If you reply to a 1-day old post on Reddit the only person who might see/reply to you is the person you replied to.
There absolutely are, but I’m not super familiar with all of the consequences of majorana neutrinos. /u/drail@fedia.io might be able to provide a better answer. My background is experimental nuclear physics, so I’m familiar a lot of experiments searching for beyond the standard model physics, but less so with the theory motivation.
One consequence of neutrinos being their own antiparticles is that it breaks lepton number conservation. This also breaks chiral symmetry, since all neutrinos are right-handed and anti-neutrinos are left-handed. This observation would also imply that neutrinos have mass - which is assumed but would be a really big deal to prove.
Yeah it’s one of those terms that’s unfortunately been co-opted for another definition. Definitely made some of my google searches in grad school feel icky… The physics terminology came first though!
Despite space being “empty” there’s still a surprising amount of stuff streaming through it. There are protons, electrons, carbon nuclei, etc constantly slamming into the Earth’s atmosphere, producing showers of radiation. These cosmic rays are the reason so many sensitive physics experiments ( like dark matter and neutrinoless double beta decay searches) are located deep underground. The earth is a good shield against these cosmic backgrounds.
Even if there was an “isolated” antimatter galaxy, it would get bombarded with matter in the form of cosmic rays. The annihilation photons are a really distinct signal that would be hard to miss. There are a number of gamma ray telescopes in space that map out sources of gammas, and they would have detected an antimatter galaxy if it existed.
If the antimatter galaxies are so far away that they’re beyond the visible universe, then there’s still the big question of why there was a segregation of matter and antimatter early on.
You’re not alone; matter-antimatter asymmetry is one of the big open questions in physics. Most particle processes treat matter and antimatter identically, but there are a few areas where matter and antimatter have slightly different interactions. These occurrences are violations of Charge Parity symmetry aka CP Violation.
There must have been a certain amount of CP violation during the early phases of the Big Bang to explain our matter-dominated universe. But the known amounts of CP Violation are nowhere near enough to explain the asymmetry in matter and antimatter. There are some proposed mechanisms that would violate CP symmetry in sufficient quantities, but these haven’t been experimentally observed. There are ongoing searches to detect these processes, or related processes that would be possible if these existed. Neutrinoless double beta decay searches are one example of these detection efforts.
In summary, there’s a guaranteed Nobel Prize to whoever can answer your question.
I am not reading your comment, I am simply traveling through it with my eyeballs. Also your comment doesn’t have gold fringe and therefore lacks jurisdiction.
but women (who are human beings)
Is that actually the church’s stance? Like, has the pope ever said this?
As annoying as it is to lug a bag around and find room for it, I much prefer this to checking it. There’s the small but nonzero chance your bag doesn’t make it to your destination, plus the added time waiting at baggage return.
There are free options for federal taxes: https://turbotaxsucksass.org/ (yes that is the real URL, the site was initially created by John Oliver for a Last Week Tonight episode).
What state are you in? Many also offer free options for state taxes.
I will run this thing until it dies.
Good luck with that. My 2011 MacBook Pro still works. I’m pretty sure it’ll outlive me.
Settle down, Jayden
It’s already been published. But it’s superconducting at 10 K. This is a new high temperature record, but pretty far from room temperature.
They’ve been doing studies of what would be required for ignition for a while, but have never demonstrated ignition using the Z machine.
If they did have ignition, there’s no way they would’ve let LLNL claim to be first and enjoy all the media attention.
Nah, the Z machine never achieved ignition. That doesn’t mean it’s not a really cool facility though!
There’s a !stupidfood@lemmy.world
Not very active, but you can change that!
If they need to raise prices by 18% to pay their workers, then they need to actually raise the prices on the menu. Right now this is just bait and switch, it’s dishonest and possibly illegal depending on the location.
The article is reporting on a published journal article. Surely that’s a good start?
Seek by iNaturalist
The app uses AI to identify the species of plants, animals, insects and fungi. In video mode you scan around something you want to ID as the AI narrows it down to the species. Then you can take a pic. The app keeps track of each unique species you’ve found (along with your photo of it). There’s also badges and achievements for identifying different numbers of species, if you want to gamify your nature sightseeing.
It’s basically real life Pokémon. Oh and it’s completely free.
Link to the NASA study