Yeni kutatás: 16 fényévnyi távolságban két naprendszerrel rendelkező, élhető méretű bolygót lehet találni

Szerző / Szerkesztő: Cem Yıldız•12 October 2026

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A new study, which shows that a planet orbiting around two suns could exist in the habitable zone of a world-sized planet with stable orbits, was conducted in the 70 Ophiuchi (70 Oph AB) binary star system, located 16 light-years away. The study also revealed 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 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 changes in the speed of a star 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 to blue, then back to red as it moves away. Researchers have achieved a sensitivity of less than a meter for this measurement.

Researchers also ruled out the presence of giant exoplanets larger than Jupiter, up to five astronomical units (AU) from the primary star — a distance in our own solar system equivalent to the mass of Jupiter — within the orbit of the two stars. 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 exoplanet host; University of Michigan (U-M) researchers note. Jacob’s claim failed to stand the test of 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 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.