Yeni Araştırma: 16 ışık yıl uzaklıkta, iki güneşin varlığına uygun bir dünya boyutundaki gezegen bulunabilir

Författare / Redaktör: Cem Yıldız•12 October 2026

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A new study, which shows that a planet the size of Earth could exist in stable orbits around two suns, was conducted in the 70 Ophiuchi (70 Oph AB) binary star system, located 16 light-years away. The study also found that there are no Jupiter-mass giant planets 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 planet the size of Earth 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 changes in a star’s speed caused by the gravitational pull of another celestial body — a planet, a stellar companion, or whatever. As the star approaches Earth, its light shifts 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 Jupiter-mass or larger exoplanets around the two stars, up to five astronomical units (AU) from the primary star—a distance equivalent to the size of Jupiter in our own solar system. This is interesting because in 1855, the English astronomer William Jacob claimed to have discovered a planet around 70 Oph AB, making it the first exoplanet candidate host; the Michigan University (U-M) researchers note. Jacob’s claim failed to stand the scrutiny, but later measurements revealed a “wobble” that could be explained by a Jupiter-sized planet.

“In general, our results show that planets in S-type orbits around the primary star of 70 Oph—including those 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.