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Stars and solar physics

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Artistic impression of acoustic waves in a star

New analysis of M67 cluster helps decode the sound of stars

Acoustic oscillations in M67 stars reveal a surprising plateau in frequency patterns, providing a new tool to probe stellar interiors and refine age estimates

Photo of the set-up in the ISAC-II experimental hall at TRIUMF. The room resembles a high-ceilinged warehouse with metal supports and high windows in the background. In the foreground is an experimental apparatus supported by a yellow metal frame.

Helium nanobubble measurements shed light on origins of heavy elements in the universe

Particle-accelerator study focuses on the r-process thought to be responsible for forming elements heavier than iron

Artist's impression of the gravitational wave and electromagnetic radiation signals from a distant binary neutron star merger arriving at Earth. The image shows the Earth floating in space with a telescope hovering above it in the bottom left corner, while in the top right corner a pair of bright spots are emitting ghostly blue waves

AI speeds up detection of neutron star mergers

New approach could aid “multimessenger” astronomy by quickly locating sources of gravitational waves emitted during these cosmic events

Kenzie Nimmo presenting this work at a recent conference. She's standing beneath a large screen that says "Using scintillation to identify the magnetospheric origin of FRB 20221022A", holding a microphone.

Fast radio burst came from a neutron star’s magnetosphere, say astronomers

Scintillation measurements show that FRB 20221022A originated from the highly magnetized region around a neutron star, challenging existing models of conditions there

Artist's impression of a superflaring Sun-like star as seen in visible light. The image shows a bright golden ball with a few dark spots on it and a prominent flare emerging from the upper left side along with a flash of intense white light.

Sun-like stars produce ‘superflares’ about once a century

Highly energetic events happen much more often than previously thought, say astronomers

Star chart showing Betelgeuse's position in the constellation Orion

‘Buddy star’ could explain Betelgeuse’s varying brightness

As-yet-undetected stellar companion would displace light-blocking dust

Illustration of the Sun's magnetic fields overlaid on an image captured by NASA’s Solar Dynamics Observatory, showing solar features traced out in bright yellow against a black background

Sun’s magnetic field may have a surprisingly shallow origin

New mathematical model reveals the workings of the stellar dynamo, with important implications for predicting solar storms

Are dusty quasars masquerading as Dyson sphere candidates?

Seven M-dwarfs recently identified as possible Dyson sphere candidates could be a case of mistaken identity

Artist's conception of the exoplanet WASP-12b. The exoplanet appears as a small sphere glowing red-hot, very close to a large yellow star

Stellar magnetic fields may give doomed exoplanets a temporary reprieve

Proposed mechanism could explain why the orbits of some "hot Jupiters" decay slower than expected

A photo of a crowd of people standing in front of a giant projection screen depicting the Moon's shadow passing in front of the Sun

Dispatches from the Great North American eclipse of 2024

Viewers in parts of Mexico, the US and Canada enjoyed a rare total solar eclipse yesterday

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