Ultrafast measurements explain quantum dot voltage drop

Solar cells and photodetectors could soon be made from new types of materials based on semiconductor quantum dots, thanks to new insights based on ultrafast measurements capturing real-time photoconversion processes.

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Fledgling stars try to prevent their neighbors from birthing planets

Stars don’t have to be massive to evaporate material from around nearby stars and affect their ability to form planets, a new study suggests. …

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Universe’s ultraviolet background could provide clues about missing galaxies

Astronomers have developed a way to detect the ultraviolet background of the universe, which could help explain why there are so few small galaxies in the cosmos. …

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Comet 67P full of surprises: Growing fractures, collapsing cliffs and rolling boulders

Images returned from the European Space Agency’s Rosetta mission indicate the surface of comet 67P/Churyumov-Gerasimenko was a very active place during its most recent trip through the solar system, says a new study. …

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Large Hadron Collider Discovers 5 New Gluelike Particles

Researchers from the Large Hadron Collider beauty experiment (LHCb) have announced the discovery of five new particles, which could shed light on what holds atoms together.
The post Large Hadron Collider Discovers 5 New Gluelike Particles appeared first on Universe Today. …

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When helium behaves like a black hole

A team of scientists has discovered that a law controlling the bizarre behavior of black holes out in space — is also true for cold helium atoms that can be studied in laboratories. This finding may be a step toward a long-sought quantum theory of gravity and new advances in quantum computing. …

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Astronomers hazard a ride in a ‘drifting carousel’ to understand pulsating stars

What sounds like a stomach-turning ride at an amusement park might hold the key to unraveling the mysterious mechanism that causes beams of radio waves to shoot out from pulsars — super-magnetic rotating stars in our galaxy. …

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Breaking the supermassive black hole speed limit

A new computer simulation helps explain the existence of puzzling supermassive black holes observed in the early universe. The simulation is based on a computer code used to understand the coupling of radiation and certain materials. …

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Does Mars have rings? Not right now, but maybe one day

Researchers have developed a model that suggests that debris that was pushed into space from an asteroid or other body slamming into Mars around 4.3 billion years ago and alternates between becoming a planetary ring and clumping up to form a moon. …

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Less radiation in inner Van Allen belt than previously believed

The inner Van Allen belt has less radiation than previously believed, according to a recent study. Observations from NASA’s Van Allen probes show the fastest, most energetic electrons in the inner radiation belt are actually much rarer and harder to find than scientists expected. This is good news for spacecraft that are orbiting in the region and can be damaged by high levels of radiation. …

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