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Astronomy Jan 3, 2025

Hubble captures a pale blue supernova in galaxy LEDA 22057

This NASA/ESA Hubble Space Telescope Picture of the Week features the galaxy LEDA 22057, which is located about 650 million light-years away in the constellation Gemini. Like the subject of a previous Picture of the Week, ...

Astrobiology Jan 3, 2025

Could habitable planets orbiting white dwarfs retain their oceans? Maybe

Potentially habitable exoplanets are so incredibly common that astronomers have started to consider more unusual situations where life might arise. Perhaps life can be found on the moon of a hot Jupiter or lingering in the ...

Plasma Physics Dec 18, 2024

Researchers address material challenges to make commercial fusion power a reality

Imagine if we could take the energy of the sun, put it in a container, and use it to provide green, sustainable power for the world. Creating commercial fusion power plants would essentially make this idea a reality. However, ...

Astronomy Dec 18, 2024

Survey of 26,000 dead stars confirms key details of extreme stellar behavior

A study of more than 26,000 white dwarf stars has confirmed a long-predicted but elusive effect in these ultra-dense, dying stars: Hotter white dwarfs are slightly puffier than cooler ones, even when they have the same mass.

Plasma Physics Dec 12, 2024

Multi-fidelity modeling boosts predictive accuracy of fusion plasma performance

Fusion energy research is being pursued around the world as a means of solving energy problems. Magnetic confinement fusion reactors aim to extract fusion energy by confining extremely hot plasma in strong magnetic fields.

Astronomy Dec 12, 2024

How to catch a supernova explosion before it happens—and what we can learn from it

Stars are born, live and die in spectacular ways, with their deaths marked by one of the biggest known explosions in the universe. Like a campfire needs wood to keep burning, a star relies on nuclear fusion—primarily using ...

General Physics Dec 11, 2024

Eyes on the sun: Naked thallium-205 ion decay reveals history over millions of years

The sun, the essential engine that sustains life on Earth, generates its tremendous energy through the process of nuclear fusion. At the same time, it releases a continuous stream of neutrinos—particles that serve as messengers ...

Astrobiology Dec 9, 2024

A technosignature that could detect an extraterrestrial civilization's reliance on nuclear fusion

Extraterrestrial civilizations need a great deal of energy as they advance up the Kardashev scale. Fossil fuels are finite, wind and solar energy are carbon free but not as efficient as fossil fuels, and traditional nuclear ...

General Physics Dec 5, 2024

Particle research gets closer to answering why we're here: Physicists outline next 10 years of neutrino research

Physicists soon will be closer than ever to answering fundamental questions about the origins of the universe by learning more about its tiniest particles.

Plasma Physics Dec 5, 2024

Researchers reveal the mechanism of runaway electron generation in tokamak fusion reactors

A research team has clarified the mechanism behind the generation of runaway electrons during the startup phase of a tokamak fusion reactor. The paper, "Binary Nature of Collisions Facilitates Runaway Electron Generation ...

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