Newly discovered Solar system

As Nasa scientists announce the discovery of a new solar system that has at least three Earth-like planets - is this newly discovered solar system proof we're not alone?

For centuries it has been one of the most vexing mysteries for mankind: are we, the seven billion inhabitants of this wondrous blue planet really alone, or is there life somewhere out there in the universe?

The discovery by an international team using advanced telescopes in space and at far-flung locations around the world has caused a frenzy of excitement among astronomers who, as a breed, are not given to hyperbole.

However, it is being described as the ‘holy grail’ for researchers.

The intriguing new planets are comparatively near neighbours, too, at just 39 light years from Earth. Granted, 39 light years (234 trillion miles) is hardly a short hop.

But that relative proximity will enable astronomers with ultra-sophisticated telescopes and scanners to focus on the planets and confirm if there is water and the benign atmosphere needed for life to thrive.

Thomas Zurbuchen, associate administrator of Nasa’s Science Mission Directorate in Washington DC, said yesterday: ‘These questions about “are we alone” are being answered as we speak, in this decade and the next decades. This story gives us a hint that finding a second Earth is not just a matter of if, but when.’