Electrons play many roles in solid materials. When they are weakly bound and able to travel—i.e., mobile—they can enable ...

The researchers deployed a special quantum effect called the two-photon spin-exchange Auger process to produce hot electrons far more efficiently than before. This process allows two low-energy ...

New research is shedding light on what researchers call "lite" intermediate-mass black holes, which are smaller, but still ...

Hints of the very first stars to light the Universe might be discovered in a faint radio signal feebly beaming from the dawn ...

LOFAR detects a faint radio 'mini-halo' from 3.8 billion years ago, revealing how galaxy clusters evolved in the early ...

An atom consists of a heavy center, called the nucleus, made of particles called protons and neutrons. An atom has lighter particles called electrons that you can think of as orbiting around the ...

Curious Kids is a series for children of all ages. If you have a question you'd like an expert to answer, send it to ...

However, although photons of light existed since the first second after the Big Bang, they could not yet shine across the ...

Compared with hot electrons, hot holes show higher density below the Fermi level, the longer mean free path arising under the lower electron–electron and electron–phonon scatterings, a lower barrier ...

Shocked Scientists Reveal Elon Musk's Exploding Starship 'Tore a Hole in the Sky' Never Seen Before The Starship's mid-air explosion caused a shock wave that scattered ionosphere electrons ...

In 2022 Bosman and her colleagues used 67 quasars (galaxies with bright, supermassive black holes at their centers) to determine that the cosmic dawn ended—that is, reionization was complete—1 ...

The electrons started gaining speed behind the laser pulse in a phenomenon known as wakefield acceleration. Because light moves slower in plasma, the electrons can catch up to the laser beam.