Scientists have made their most accurate measurement yet of the mass of a mysterious neutrino particle. Neutrinos are sometimes known as “ghost particles” because they interact so weakly with other forms of matter.
Previous experiments had shown that neutrinos have a mass, but it was so tiny that it was very hard to measure.
Using data from the largest ever survey of galaxies, researchers put the mass of a neutrino at no greater than 0.28 electron volts. This is less than a billionth of the mass of a single hydrogen atom, the scientists say.
Their nickname is fitting: a neutrino is capable of passing through a light-year (about six trillion miles) of lead without hitting a single atom…
The neutrino particle comes in three “flavours”: muon, tau and electron. In a recent experiment, physicists caught a neutrino in the act of changing from one type to another…
Scientists used the largest ever 3D map of galaxies in the Universe, based on data gathered by the Sloan Digital Sky Survey.
They were able to determine a new upper limit for the neutrino particle by analysing the distribution of galaxies across the Universe…
I didn’t see any notice taken of angels by the Sloan Digital Sky Survey. Not even
by on pinheads.