[SunkenCiv]

Every day billions of subatomic particles called neutrinos are streaming at Earth from the sun. But these particles have no charge, very tiny masses, and move near the speed of light, making them especially hard to detect (above, a diver services a tank of water in Michigan used to detect neutrinos).

In May 2009 astronomers trying to measure neutrino masses found that the oldest known neutrinos might have been stretched by the expansion of the universe so that each particle encompasses a space larger than thousands of galaxies.

Photograph by Joe Stancampiano/NGS

[SunkenCiv]

How many angels on the head of a pin ping.

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[bvw]

Cool. Not that it’s correct, but it is interesting new way of re-framing the thought process.

[HiTech RedNeck]

Wonder if there are other particles this fat, and if those would account for the so called “dark matter” being currently talked about.

[Bloody Sam Roberts]

What is the mass of such a 10B light year sized neutrino?
Is it different than the mass of a previously detected, very tiny mass neutrino?
If so, what effect does this have on the equations being used by astronomers looking for all that Dark Matter?

[dfwgator]

Pinto: Okay. That means that...our whole solar system...could be, like...one tiny atom in the fingernail of some other giant being....This is too much!

That means...one tiny atom in my fingernail could be—

Jennings: Could be one little...tiny universe.

Pinto: Could I buy some pot from you?

[TomOnTheRun]

Fascinating. Simply fascinating. Many many thanks for sharing this.

[bert]

I thought I saw one once but every time I looked, it wasn’t there

[beethovenfan]

About the size of Al Gore’s ego.

[Hebrews 11:6]

neutrinos might each encompass a space larger than thousands of galaxies

They need to go on Neutrinosystem.

[NativeSon]

interesting theory, but it appears to me that it is more about “sphere of possible or probable influence”. It is misleading to say that the “particle is this big”... be really neat if the neutrino was not tied to space/time but to time...

[r9etb]

OK, so I'm no quantum physicist, but it appears to me that this guy is equating uncertainty about where a particle can be, with the particle's size.

I get the feeling -- perhaps unwarranted -- that this definition of "size" does not equate to the dimensions of the particle itself.

Can somebody set me straight?

[martin_fierro]

That’s one big-a55 dust bunny.

[samtheman]

I guess they're going to have to build a bigger Neutrino Detector.

[allmost]

Where is the probability of that electron from my screen to read this at? I’m sure some of them have come back from other Universes. :) If you don’t know, make it up and get funding I guess...