Scientists Find Earth-like Exoplanets

    • PTI
    • Publish Date: Aug 2 2018 2:52PM
    • |
    • Updated Date: Aug 2 2018 2:52PM
Scientists Find Earth-like Exoplanets
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Scientists have identified a group of planets outside our solar system where the same chemical conditions that may have led to life on Earth exist.

The researchers, from the University of Cambridge in the UK, found that the chances for life to develop on the surface of a rocky planet like Earth are connected to the type and strength of light given off by its host star.

The study, published in the journal Science Advances, proposes that stars which give off sufficient ultraviolet (UV) light could kick-start life on their orbiting planets in the same way it likely developed on Earth, where the UV light powers a series of chemical reactions that produce the building blocks of life.

The researchers have identified a range of planets where the UV light from their host star is sufficient to allow these chemical reactions to take place, and that lie within the habitable range where liquid water can exist on the planet's surface.

"This work allows us to narrow down the best places to search for life," said Paul Rimmer, a postdoctoral researcher with a joint affiliation at Cambridge and the Medical Research Council Laboratory of Molecular Biology in the UK.

The researchers found that stars around the same temperature as our sun emitted enough light for the building blocks of life to have formed on the surfaces of their planets.

Among the known exoplanets which reside in the abiogenesis zone are several planets detected by the Kepler telescope, including Kepler 452b, a planet that has been nicknamed Earth's 'cousin', although it is too far away to probe with current technology.


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Kamalesh Bethel Mat Hr Sec School

It is informative

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