US EditionClingy Planets Can Trigger Their Own Doom, Cheops and TESS Suggest
HIP 67522 STAR SYSTEM, CONSTELLATION CENTAURUS, JUL 2 – HIP 67522 b orbits its young star every seven days, causing flares that expose the planet to six times more radiation and rapidly strip its atmosphere, researchers say.
- Astronomers led by Ekaterina Ilin reported on July 2 in Nature that exoplanet HIP 67522 b triggers energetic flares on its host star.
- This finding challenges the previous assumption that stars act independently, as HIP 67522 b orbits its 17-million-year-old star every seven days causing magnetic disturbances.
- HIP 67522 b, roughly Jupiter's size but with an extremely low-density, cotton candy-like atmosphere, is subject to flares that are about 100 times more intense than anticipated, causing its atmosphere to dissipate swiftly.
- Cheops observed a total of 15 flares mostly aligned with the planet's transit, confirming the planet's role as "triggering particularly energetic flares," according to Ilin.
- HIP 67522 b could shrink from Jupiter to Neptune size within 100 million years, marking a new frontier in understanding planet-star magnetic interactions.
23 Articles
23 Articles
Some exoplanets orbit very close to their star, is the case of HIP 67522 b, which is so close that it exerts magnetic influence on its host, which may imply the disappearance of the planet itself. Astronomers of the CHEOPS mission, a space project of the European Space Agency (ESA), have detected that the exoplanet appears to trigger flares of radiation from its star, which, in turn, are destroying the faint atmosphere of the planet and causing …
A Jupiter-size planet as delicate as cotton candy provokes its star
A gas giant planet in distant space has kicked the cosmic hornet's nest: After the world's relentless taunting, its fiery star is after revenge, and the planet will suffer the consequences, astronomers say. Exoplanet HIP 67522 b, fluffed up to the size of Jupiter, circles so close to its star that it’s triggering violent flares — bursts of high-energy radiation — from its host that then blast it in the face. Those flares strip away the planet’s …
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Clingy planets can trigger their own doom, Cheops and TESS suggest
Astronomers using the European Space Agency's Cheops mission have caught an exoplanet that seems to be triggering flares of radiation from the star it orbits. These tremendous explosions are blasting away the planet's wispy atmosphere, causing it to shrink every year.
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