Austin: A little-known planet 111 light years away could be a ‘scaled-up version of Earth’ which is able to host alien life, according to new research.
The distant exoplanet is known as K2-18b and has been described as being a potential ‘Super-Earth’ – a large rocky planet with the potential to support life.
It orbits within its star’s habitable zone, which means there’s a chance it could hold liquid water on its surface, which is a key component for the possibility of life as we know it.
The new study, by researchers at the University of Texas, Scarborough, and University of Montreal, Canada, was carried out using data from the European Southern Observatory (ESO).
They also discovered for the first time that the planet has a neighbour, called K2-18b. Both planets orbit the red-dwarf star K2-18, which is 111 light years from Earth in the Leo constellation.
Lead author Ryan Cloutier, from the University of Montreal, said: “Being able to measure the mass and density of K2-18b was tremendous, but to discover a new exoplanet was lucky and equally exciting.”
They found that the planet is probably mostly rocky with a gaseous atmosphere – like Earth, only bigger – however it may be a mostly water planet with a thick layer of ice, so further investigation is needed.
The newly discovered planet is closer to its star, meaning it is likely to be too hot to support life.The atmosphere of K2-18b will be probed further by NASA’s James Webb Space telescope when it launches in 2019.