Researchers from Columbia University in New York have unearthed compelling evidence that there is a neptune-sized moon orbiting an alien planet 8,000 light years away from earth.
Over the past three decades, astronomers have identified thousands of alien planets, but have been yet to locate an exomoon.
The research team plans to gather more data from the Hubble Space Telescope before confirming the finding, as they say the discovery of an exomoon is an extraordinary claim that requires extraordinary evidence.