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NEWS / 2023 / 11 / 30 / MILKY WAY SURPRISE: ASTRONOMERS FIND 6-PLANET SOLAR SYSTEM IN PERFECT HARMONY

Milky Way Surprise: Astronomers Find 6-Planet Solar System in Perfect Harmony

10:59 30.11.2023

Astronomers have made a groundbreaking discovery that could revolutionize our understanding of how solar systems in the Milky Way galaxy are formed. Using planet-hunting satellites, researchers have identified a solar system located 100 light-years away in the constellation Coma Berenices that features six planets moving in perfect sync with each other. This discovery suggests that the system has remained untouched by any external forces since its creation billions of years ago. The findings were announced on Wednesday and have been published in the journal Nature.

The planets in this rare solar system, known as HD 110067, are approximately two to three times larger than Earth but possess densities similar to the gas giants in our own solar system. They have orbits ranging from nine to 54 days, which places them closer to their star than Venus is to the Sun. Consequently, these planets experience extremely high temperatures that make it unlikely for life as we know it to exist within their boundaries.

Astronomers used two planet-hunting satellites, NASA's Tess and the European Space Agency's Cheops, to locate this system of planets revolving around a single star. Although the discovery of six planets has been confirmed, there could potentially be more in this system that are yet to be identified. However, what makes this solar system truly unique is the synchronized movement of its planets. Scientists describe it as akin to a perfectly orchestrated symphony. The innermost planet completes three orbits for every two of its closest neighbor, while the two outermost planets complete four orbits for every three. Additionally, the innermost planet completes six orbits in the same amount of time that the outermost planet completes one.

According to Adrien Leleu of the University of Geneva, this finding provides astronomers with a "golden target" for comparison and offers valuable insights into the formation of solar systems. This synchronized movement, known as resonance, is believed to be a common occurrence in the early stages of all solar systems. However, it is estimated that only 1-in-100 systems retain this synchrony over billions of years. Our own solar system, unfortunately, does not possess this level of synchronization.

Hugh Osborn of the University of Bern, who was involved in the discovery, expressed his astonishment and delight at the orbital periods of the planets aligning with scientists' predictions. He described the moment as "a really nice moment" that left him "shocked and delighted."

While this discovery does not indicate the presence of habitable planets, it adds to astronomers' understanding of how solar systems evolve and highlights the incredible complexity and beauty of the universe. Further observations will be conducted to gather more information about the composition and atmospheres of these planets.

Although astronomers have identified approximately 40 to 50 in-sync solar systems, none have exhibited the same level of synchronization or included as many planets as this newly discovered system. This, coupled with the brightness of the star, makes HD 110067 a truly remarkable find in the search for understanding the origins and dynamics of solar systems in the Milky Way galaxy.

/ Thursday, 30 November 2023 /

themes:  NASA  Cosmos

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