Yeni araştırma: 16 ışık yılin etäisyydellä on maailmankokoinen planeetta, jossa on kaksi aurinkoa

Kirjoittaja / Toimittaja: Cem Yıldız•12 October 2026

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A new study, which demonstrates that a planet orbiting stably within the habitable zone around two suns could exist on a world-sized scale, was conducted in the 70 Ophiuchi (70 Oph AB) binary star system, located 16 light-years away. The study also revealed that no Jupiter-mass giant planets exist in this system. Stephen Kane, an astrophysicist at the University of California, Riverside (UCR), said, “You might think that the second star would come in like a wrecking ball and make it impossible for a world-sized planet to exist in the habitable zone. But these simulations show that this is not necessarily the case.”

The second successful method for finding planets, the RV method, is responsible for the discovery of more than 1,200 exoplanets. This method measures tiny variations in a star’s speed caused by the gravitational pull of another celestial body—whether it’s a planet, a stellar companion, or something else. As the star approaches Earth, it shifts its light slightly toward blue, then back toward red as it moves away. Researchers have achieved a sensitivity of less than a meter for this measurement.

The researchers also ruled out the presence of giant exoplanets larger than Jupiter, which is five astronomical units (AU) away from the primary star – a distance equivalent to the mass of Jupiter in our own solar system. This is interesting because in 1855, British astronomer William Jacob claimed to have discovered a planet in 70 Oph AB, making it the first candidate for an exoplanet host; researchers at the University of Michigan (U-M) note that Jacob’s claim failed to stand up to scrutiny, but later measurements revealed a “wobble” that could be explained by a planet the size of Jupiter.

“In general, our results show that planets in S-type orbits around the primary star of 70 Oph—including in the habitable zone—could sustain rocky planets. If star binary systems can host solar-like planets, 70 Oph is one of the best places to look.” The research was published in a journal.