The Limited Times

Now you can see non-English news...

Sun's 'missing' neutrinos finally detected

2020-07-07T14:08:31.520Z

ANALYSIS - After years of tracking, physicists have got their hands on evanescent particles emitted in the heart of our star.



How do you know what's going on in the heart of the Sun? The photons produced by deep thermonuclear fusion reactions can take hundreds of thousands, if not millions, of years to escape. And during this journey, they are absorbed and reissued countless times, irretrievably losing information about the events that gave rise to them. Physical models still allow us to reproduce what must happen at the heart of our star to explain its “visible” properties: the energy radiated on the surface, its jolts, its mass, its thermodynamic equilibrium, etc.

Read also: A spectacular new map of the world of high energies

But there are also direct witnesses to this chaotic interior life: neutrinos. These particles are emitted in very large quantities by nuclear fission and fusion reactions but interact very little with matter. Electrically neutral, very light, they pass through almost everything they encounter as if nothing had happened. Each second,

This article is for subscribers only. You still have 80% to discover.

Subscribe: € 1 for 2 months

Cancelable at any time

Enter your email

Already subscribed? Log in

Source: lefigaro

You may like

Tech/Game 2020-07-07T14:08:31.520Z

Trends 24h

Tech/Game 2020-08-04T10:52:46.925Z

Latest

tech 2020/08/04    

© Communities 2019 - Privacy