Thursday, July 23, NASA revealed the existence of Kepler-452b, an exoplanet that boosts the dream of the presence of another life elsewhere. But how
this planet has she been discovery ? On the plateau of France 2, Nicolas Chateauneuf explains that “This is a story of light” . “When a planet orbits its star, it passes regularly in front of her and she will hide a small part of the light of this star” . The Kepler space telescope is able to detect minute variations in its lights.
The journalist recalls that Kepler-452b is 60% larger than the Earth, rocky like Earth and a little older. It is exactly the right distance from its star. “It means that it can house liquid water on the surface and it is the essential condition for seeing life grow” said Nicolas Chateauneuf. It will take
before check as “with our current technologies, travel would last 30 million years” , the journalist concludes.
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