Last Updated: Scientists Receive First Potential Signal From Exoplanet 51 Light-years Away: Study As per study published in the journal of Astronomy & Astrophysics say that a team of scientists received the first signal from exoplanet 51 light-years away. In another extensive search for possible alien life, a team of scientists at Cornell University in the US for the first time has collected a potential radio signal from a planet beyond our solar system. This first possible radio signal from the aliens is believed to be emanating from an exoplanet system about 51-light years away. Using the Low-Frequency Array (LOFAR), a radioactive telescope in the Netherlands, the scientists have uncovered emissions from the Tau Bootes start-system hosting a so-called hot Jupiter, which is a gaseous giant planet that is very close to its own sun.