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Too-close exoplanet triggers flares from host star

New observations are the first direct evidence of planets influencing their stars rather than just passively orbiting them

Infographic entitled "Clingy planets can trigger their own doom". It shows a planet passing close to its host star and perturbing the star's magnetic field, triggering a flare that blasts away the planet's wispy atmosphere and causing it to shrink over time

Astronomers observe the biggest booms since the Big Bang

"Extreme nuclear transients" from tidally disrupted heavy stars release more energy than 100 supernovae

A bright image of two circular objects, one in a blue colour and the other in an orange colour. A thin trail of material leads from the blue object (the star) to the orange object (the black hole that's accreting the material)

Short-lived eclipsing binary pulsar spotted in Milky Way

Rare sighting could allow astronomers to test theories of binary star systems

Two stars orbiting each other in the night sky

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

Artistic impression of acoustic waves in a star

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

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.

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

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

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

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.

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

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

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.

‘Buddy star’ could explain Betelgeuse’s varying brightness

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

Star chart showing Betelgeuse's position in the constellation Orion

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

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

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