Star-planet interactions as a research area examine the coupled physical processes between a star and its close-orbiting planets, emphasizing how stellar radiation, winds, and magnetic fields influence planetary atmospheres, magnetospheres, interiors, and orbital evolution, and how planets can in turn affect stellar activity and rotation. This field integrates stellar astrophysics, exoplanet science, plasma physics, and magnetohydrodynamics to study phenomena such as atmospheric escape, induced stellar flares, tidal dissipation, spin-orbit synchronization, and magnetic star-planet coupling. It relies on multiwavelength observations, numerical simulations, and theoretical modeling to constrain planetary habitability, system evolution, and the detectability of exoplanets through their signatures on host stars.
Like a toddler right before naptime, TRAPPIST-1 is a small yet moody star. This little star, which sits in the constellation Aquarius about 40 light-years from Earth, spits out bursts of energy known as "flares" about six ...
Astronomy
Dec 4, 2025
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What can star variability—changes in a star's brightness over time—teach astronomers about exoplanet habitability? This is what a recent study accepted for publication in The Astronomical Journal hopes to address as a team ...
Astrobiology
Dec 1, 2025
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34
Aging stars may be destroying the giant planets orbiting closest to them, according to a new study by astronomers at UCL and the University of Warwick.
Planetary Sciences
Nov 5, 2025
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52
Why is it important to know about exoplanets having their atmospheres stripped while orbiting F-type stars? This is what a recent study submitted to The Astronomical Journal hopes to address as an international team of scientists ...
Planetary Sciences
Oct 30, 2025
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22
How do tidal forces shape a planet's orbital evolution, especially for those in the habitable zone? A recently submitted study aims to answer this question, as an international team of researchers investigated how tidal forces ...
Astrobiology
Aug 20, 2025
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36
Exoplanet habitability depends on a whole host of factors, with liquid water at the top of the list. It also requires a stable atmosphere, the right chemistry, and possibly even things like plate tectonics or other geological ...
Planetary Sciences
Aug 19, 2025
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40
Our sun is about five times less magnetically active than other sunlike stars—effectively a special case. The reason for this could reside in the planets in our solar system, say researchers at the Helmholtz-Zentrum Dresden-Rossendorf ...
Planetary Sciences
Aug 12, 2025
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66
Astronomers have observed an explosion in space that is pushing back against and influencing the baby star which triggered the explosion in the first place. If explosions like this one are common around young stars, then ...
Astronomy
Aug 5, 2025
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82
Stars and planets are naturally associated with one another. While some planets have gone rogue and are drifting through space, the vast majority are in solar systems, where they're gravitationally bound and orbit their stars ...
Astronomy
Jul 17, 2025
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42
Some exoplanets in their stars' habitable zones may be distinctly uninhabitable due to solar flaring. Red dwarfs are known for powerful flaring, and since they're dim and their habitable zones are close to the star, these ...
Planetary Sciences
Jul 10, 2025
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