FLASH
Shkruar nga Pamfleti
Scientists at CERN (the European Organization for Nuclear Research, based in Switzerland) have managed to observe for the first time a very small sign left by an elementary particle, during experiments at the Large Hadron Collider (LHC).
It's about a high-energy quark passing through what's called quark-gluon plasma - an extreme state of matter thought to have existed immediately after the Big Bang, when the Universe was only a few microseconds old.
At that time, the temperature was so high that particles had not yet formed as we know them today. Matter was like a very hot “soup” where the smallest components moved freely.
By colliding atomic nuclei at very high speeds, scientists recreate these extreme conditions for a moment. In one of these experiments, they discovered that the quark leaves behind a very slight "dilution" in this plasma, something similar to the trail a boat leaves in water.
Although the effect is very small (less than 1%), it is important because it helps scientists better understand what the Universe was like in its early days.
This discovery is considered an important step in discovering how matter was formed and how the Universe evolved to the form we know today.
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