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The words
Ever since the [discovery / discover] of a new solar system several [week / weeks] ago, scientists have been discussing [whether / weather] planets in the system could contain [life / live] . Scientists called the system "TRAPPIST-1". It contains a small sun and seven Earth-sized planets. It is very [same / similar] to our own solar system. NASA scientist Michael Gillon said three of the seven TRAPPIST-1 planets receive [as / has] much heat from its sun as Venus, Earth and Mars receive from [your / our] Sun. He said this provides the right environment for life to [exits / exist] . TRAPPIST-1 is in a star system called Aquarius. It is nearly 40 light-years [away / far] from the Earth. Its sun is smaller than our Sun and has just 1/1000th of its [brightly / brightness] , but that could be enough to support life.

Michael Gillon explained that you could see the [another / other] six planets in the sky if you were on [one / once] of the TRAPPIST-1 planets. A neighbouring planet could look bigger than our view of our Moon. Mr Gillon said: "If you were on the [surface / surfaced] of one of these planets, you would have a wonderful view [for / of] the other planets. You wouldn't see [it / them] like we see Venus or Mars, like [dots / dot] of light. You would see them really as we see the Moon. You would see the [structural / structures] on these worlds." Astronomer Dr Jessie Christiansen said life exists everywhere, "[such / so] as bacteria that survives in 130-degree caves, or [things / thinks] at the bottom of the ocean where there's [any / no] light". She said it could be possible for life to exist on some of these planets.

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