Complete the text about life on other planets.
What does a' planet need to support life? Earth
is our model. To have the right?
with the
right temperature, it needs to be not too near and
not too far from the Sun It must also be big enough
to have gravity to stop the gases in its
from escaping into
to protect life from
radiation and allow it to breathe. 5
has this,
but our nearest neighbour,
is too small
to have an atmosphere. For a planet to have life, it
needs liquid water, probably in large?
Or
seas. So could there be life on other planets? Almost
certainly!
contains billions of stars, and
many are suns like ours. In fact, the NASA Kepler
telescope has already found one planet, K452b,
which seems to have all these things it har
8
DO
