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Because of the bright lights of the modern
cities, when we look up at the sky we can see
no more than 100 stars. But from dark parts of
the Earth, the naked eye can see more than
5,000! And modern telescopes tell a very
different story.
With the help of some of the world’s most
powerful instruments to measure the brightness
of all the galaxies in one sector of the cosmos,
Australian astronomers say it is probable that
there are 70 sextillion stars in the visible
Universe. In other words and numbers, seven
followed by 22 zeroes, a really astronomical
figure.
That is more than the total number of grains
of sand in all the world’s beaches and deserts,
and that is only the visible Universe within range
of our telescopes.
Dr. Simon Driver, of the Australian National
University, has a theory that some of them
probably have life. Dr. Driver’s theory is not
exactly new, and those planets are so distant,
he says, that there is no real possibility for us to
see or contact anyone living on them.
Retirado do livro “Inglês série Brasil”, p. 8, 2008
Analyze the following statements:
I. The number of stars in the visible Universe is
an astronomical figure.
II. Some stars have life, but they are too far
away from the Earth.
III. There are more grains of sands on the
world’s beaches and deserts than all the stars in
the Universe.
IV. Life is impossible on those distant planets,
according to Dr. Simon Driver.
Mark the correct alternative:
