The second extrasolar moon has just been identified and its size really shocked the scientific world.
If placed next to the Earth and moon, the planet Kepler-1708 b and its supermoon Kepler-1708 marble look like the world of the mythical giant. Kepler-1708 has a radius ten times that of Earth, so is its moon compared to ours. Detailed calculations show that the diameter of this moon is 2.6 times larger than the Earth itself, according to Science Alert.
The extrasolar moon is larger than the Earth – Photo: Helena Valenzuela Widerstrom
This is the second extrasolar moon to be identified. Before that, in 2017, scientists found Kepler 1625 bi, an even larger supermoon, about the size of Neptune, orbiting a planet several times larger than Jupiter and 8,000 light-years away. shining.
Both supermoons were found by a team of scientists led by astronomers Alex Teachey and David Kipping from Columbia University, based on data analysis by the Kepler space telescope.
However, the existence of both of these extrasolar moons is controversial, because some scientists think that their faint signs may simply be due to noisy signals, because they are too large. so far away that every observation has the potential to lead to error.
According to CNN, these giant moons must have formed differently from Earth’s moon. Perhaps they accumulated gas from their parent planet, or they were once a planet themselves but were eventually abducted by the parent planet’s massive gravitational field.
The study has just been published in Nature Astronomy.
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