Scientists use a telescope. This telescope is called the Kepler telescope. It is powerful.
The scientists find a planet with it. The planet is 1,400 light years away. The planet is called Kepler-452. It is 60 per cent bigger than Earth.
The planet moves around a star. This star is like our sun. The planet is at a good distance from the star. There can be liquid water on the planet. Maybe, life exists on the planet.
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