Stellar rotation as a research area investigates the angular momentum content and evolution of stars, its observational diagnostics, and its impact on stellar structure and environments. It encompasses measurement techniques such as line broadening, rotational modulation of photometric and spectroscopic signals, and asteroseismology, as well as modeling of internal differential rotation, angular momentum transport, and magnetic braking. The field examines rotation’s role in dynamo-driven magnetic activity, mass loss, mixing of chemical elements, and evolutionary pathways from pre-main-sequence phases to compact remnants, with implications for stellar populations, gyrochronology, and progenitors of phenomena such as gamma-ray bursts and gravitational-wave sources.
Scientists have found that young stellar cousins of our sun are calming down and dimming more quickly in their X-ray output than previously thought, according to a new study using NASA's Chandra X-ray Observatory. A paper ...
Astrobiology
22 hours ago
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How does a star affect the makeup of its planets? And what does this mean for the habitability of distant worlds? Carnegie's Luke Bouma is exploring a new way to probe this critical question—using naturally occurring space ...
Astrobiology
Mar 30, 2026
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Every eleven years, the sun's magnetic field flips. Sunspots—dark, cooler regions on the sun's surface that mark intense magnetic activity and often trigger solar eruptions—appear at mid-latitudes and migrate toward the star's ...
Astronomy
Mar 17, 2026
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Researchers at Nagoya University in Japan have conducted the most detailed simulation of the interior of stars and disproved a theory scientists have believed for 45 years: that stars switch their rotation patterns as they ...
Astronomy
Mar 6, 2026
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Advances in supercomputing have made solving a long‐standing astronomical conundrum possible: How can we explain the changes in the chemical composition at the surface of red giant stars as they evolve?
Astronomy
Feb 20, 2026
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A research team has investigated long-term X-ray variability in the neutron star NGC 7793 P13, an object thought to be driven by supercritical accretion, where an extraordinary amount of gas falls onto the object and emits ...
Astronomy
Dec 14, 2025
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Most places on Earth have seasons because our planet is on a tilt as it orbits the sun. But our star also has its own version of seasons that affect life on Earth—and new astronomical research is helping us better understand ...
Astronomy
Sep 10, 2025
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Researchers at UC Santa Barbara, The University of Texas at Austin, Yale University and National Taiwan Normal University have found that a fair number of sun-like stars emerge with their rotational axis tilted with respect ...
Astronomy
Aug 6, 2025
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122
An international team of astronomers report the discovery of a long-period radio transient, which is unusually circularly polarized and showcases an accelerating spin period. The finding of the new transient, designated CHIME ...
Figuring out the ages of stars is fundamental to understanding many areas of astronomy—yet, it remains a challenge since stellar ages can't be ascertained through observation alone. So, astronomers at the University of Toronto ...
Astronomy
Jul 2, 2025
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