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CHEOPS finds unique planetary system - Communiqués de presse


 
Musical notes that sound pleasant together can form a harmony. These notes are usually in a special relationship with each other: when expressed as frequencies, their ratios result in simple fractions, such as four-thirds or three-halves. Similarly, a planetary system can also form a kind of harmony
when planets, whose orbital period ratios form simple fractions, regularly attract each other with their gravity. When one planet takes three days to orbit its star and its neighbor takes two days, for example. Using the CHEOPS space telescope, scientists from the University of Geneva, the University of Bern and the National Center of Competence in Research PlanetS, found such relationships between five of six planets orbiting the star TOI-178, located over 200 light years away from Earth. The results were published in the journal ....

Yann Alibert , Nathan Hara , Adrien Leleu , National Center , University Of Geneva , European Space Agency , Habitability Of The University Bern , University Of Bern , Exoplanet Survey Satellite , Research Planet , Research Planets , Transiting Exoplanet Survey Satellite , European Southern Observatory , Paranal Observatory , நாதன் ஹரா , தேசிய மையம் , பல்கலைக்கழகம் ஆஃப் ஜிநீவ , பல்கலைக்கழகம் ஆஃப் பெர்ன் , ஆராய்ச்சி கிரகம் , ஆராய்ச்சி கிரகங்கள் , ஐரோப்பிய தெற்கு கண்காணிப்பு ,

Puzzling six-exoplanet system with rhythmic movement challenges theories of planetary formation -- Science & Technology -- Sott.net


© ESO/L. Calçada/spaceengine.org
This artist s impression shows the view from the planet in the TOI-178 system found orbiting furthest from the star. New research by Adrien Leleu and his colleagues with several telescopes, including ESO s Very Large Telescope, has revealed that the system boasts six exoplanets and that all but the one closest to the star are locked in a rare rhythm as they move in their orbits. But while the orbital motion in this system is in harmony, the physical properties of the planets are more disorderly, with significant variations in density from planet to planet. This contrast challenges astronomers understanding of how planets form and evolve.This artist s impression is based on the known physical parameters for the planets and the star seen, and uses a vast database of objects in the Universe.Using a combination of telescopes, including the Very Large Telescope of the European Southern Observatory (ESO s VLT), astronomers have revealed a system c ....

Yann Alibert , Nathan Hara , Adrien Leleu , European Space Agency , University Of Bern , Large Telescope , Very Large Telescope , European Southern Observatory , Solar System , நாதன் ஹரா , பல்கலைக்கழகம் ஆஃப் பெர்ன் , பெரியது தொலைநோக்கி , மிகவும் பெரியது தொலைநோக்கி , ஐரோப்பிய தெற்கு கண்காணிப்பு , சூரிய அமைப்பு ,

Astronomers discover an exoplanet system with rhythm


Astronomers discover an exoplanet system with rhythm
The rhythmic movement of five of the six exoplanets around the star TOI-178 could challenge theories of planetary evolution.
Astronomers have discovered a unique system of exoplanets in which all but one of the planets orbit their parent star in a rare rhythm. The finding could force us to revise our ideas of how planets–including those in our own solar system–form.
The team–including astronomers from the University of Bern and the University of Geneva–used a combination of telescopes and the European Southern Observatory’s (ESO) Very Large Telescope (VLT) to observe the star TOI-178, 200 light-years away from us in the constellation Sculptor. ....

Yann Alibert , Nathan Hara , Adrien Leleu , University Of Geneva , European Space Agency , University Of Bern , European Southern Observatory , Very Large Telescope , Large Telescope , Disorder Enter , Super Earths , Atacama Desert , நாதன் ஹரா , பல்கலைக்கழகம் ஆஃப் ஜிநீவ , பல்கலைக்கழகம் ஆஃப் பெர்ன் , ஐரோப்பிய தெற்கு கண்காணிப்பு , மிகவும் பெரியது தொலைநோக்கி , பெரியது தொலைநோக்கி , கோளாறு உள்ளிடவும் , அருமை பூமிகள் ,