Geoneutrinos Discovered

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Geoneutrinos Discovered Deep Inside Earth

Basically antimatter particles were discovered deep in the Earth's interior, and it's the antimatter counterpart to a neutrino. Geologists think that studying the behavior of these particles can help them understand how events occurring deep inside the Earth could impact the surface. i.e earthquakes/volcanoes.

That article was from Princeton. The site just gathers articles from different research institutions from around the world.

http://www.princeton.edu/main/news/archive/S27/68/71E19/index.xml?section=topstories

Even more interesting, neutrinos and anti-neutrinos seem to be non-symetrical, Neutrino experiments sow seeds of possible revolution . If these results hold up, it would explain why our universe isn't a chaos of matter and antimatter annihilation. It would also put a serious Chinese in the armor of Einstein's theory of Special Relativity.

Anti-particle and particles would have mutually anihilated each other billions of years ago.

The article you refer is scientific nonsense.

ruveyn

Nah, that's kosher. Antineutrinos are produced as a result of radioactive beta decay, and they hardly interact with anything anyway, so they just zip straight through the Earth (and just about anything else; neutrino detectors have to be rather large to expect to catch even a few of them.)

What it doesn't mean is classical antimatter, antihydrogen say, which most certainly would mutually annihilate with the first thing it came across.

Do point out any mistakes. I don't pretend to know this properly!

Neutrinos are weird. I don't really know much about them. They oscillate between different states as they go and presumably antineutrinos oscillate between the three corresponding antiparticle states. To make things weirder neutrinos and antineutrinos may actually be the same thing. Or may not. I don't know whether the mass discrepancy in the link budgenator provided would mean neutrinos and antineutrinos were definitely not Majorana particles.

Neutrinos aren't rare, they just interact very, very weakly with everything else, on account of being uncharged (neutr-) and having tiny mass (-ino). A second after it is produced by radioactive decay a neutrino is likely to be well outside lunar orbit having largely failed to notice the Earth. They're not really the annihilating types.

I keep meaning to learn this stuff. By the time we reached the complicated particle stuff at university I was seriously depressed and had trouble staying awake in lectures, not that I'd've understood it anyway... ...I vaguely recall drawing the funny lopsided house-of-cards diagrams with lots of particles on...