A star, which is about 1,500 light years from Earth, has sparked a lot of speculation over the internet after astronauts picked up unusual readings suggesting there is unusual amount of debris orbiting the star at different speeds.

The star named KIC 8462852 has different sized debris orbiting the star.Astronomers studying the sky in 2011 had picked up strange readings. Experts said that young starts usually have such debris around it but KIC 8462852 is not believed to be a young star and thus some scientists are speculating that there might be alien life on the star.

Jason Wright at Penn State University said that the finding alien life is a distant consideration but the indications are that it might be built by an alien civilisation. He said that it might be some kind of megastructures orbiting the sun.

Some indicate that it might be the Dyson sphere surrounding the sun. Freeman Dyson had proposed the concept in the 1960s. It is a group of megastructures built around a star to harvest its energy and the expertise to build such megastructures would have to be backed by an advanced civilisation.