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כתבות אחרונות מאתר 'Phys'
Phys

Unique chromium beam experiment unlocks cosmic ray origins and galactic chemistry‎

When a star dies, it generates an explosion of elemental nuclei and hurls them into space. Those elements, called cosmic rays, travel at nearly the speed of light, and eventually some of them encounter manmade detectors. Recording how many of each of these elements show up helps scientists better understand cosmic processes—but despite incredible research advances over the last century, uncertainty around how these elements transform as they travel across the light-years has left fundamental questions about our galaxy's composition unanswered.

06:48
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Phys

South African telescope detects record‑breaking signal from the early universe‎

Astronomers using the MeerKAT radio telescope in South Africa have discovered the most distant hydroxyl megamaser ever detected, opening a new radio astronomy frontier. A hydroxyl megamaser is a natural space laser, and this one is located in a violently merging galaxy more than 8 billion light-years away.

03:49
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Phys

David Kipping has new take on the existence of advanced life in the universe and the numbers are not encouraging‎

Between the mid-1970s and early 1980s, two physicists, Michael Hart and Frank Tipler, published a controversial series of papers arguing that extraterrestrial intelligence didn't exist. As they argued, the likelihood that extraterrestrial civilizations (ETCs) would have had enough time to develop advanced computing, spaceflight and self-replicating machines (Von Neumann probes) means they would have colonized the galaxy, and come to Earth, long ago. Since there was no evidence of this, they reasoned that ETCs must not exist and humanity was alone in the universe.

02:48
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Phys

Ocean monitoring is in trouble: It's up to Europe and Asia to avoid losing sight of the world's deep‑sea ecosystems‎

The world relies on a modest number of countries to keep watch over the ocean. That arrangement is starting to fail. Europe and Asia must now decide whether to let the system unravel, or to take it up together.

01:40
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Phys

Could leaves help feed humanity after disaster?‎

UC researchers are investigating whether leaf protein and sugar extracted from plant fiber could help sustain people if major global shocks disrupt food production. Te Whare Wānanga o Waitaha | University of Canterbury (UC) Associate Professor David Denkenberger, who has spent more than a decade studying food resilience in extreme scenarios, says the work is part of a broader effort to identify practical ways to prevent mass starvation if global food systems are severely disrupted.

00:04
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Phys

Dogs and humans are more alike than we thought, study finds‎

The same biological signals that help predict lifespan in humans also appear in dogs, according to new research from the Dog Aging Project—a finding that could help scientists better understand aging in both species.

00:04
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