SORU: aşağıdaki parçaya göre cevaplayınız
According to the passage, there had been a limitation for astronomers, since they ----.
Astronomers have a reputation for bringing us stunning
discoveries: new planets and galaxies on the edge of
the known universe. But now they are on the trail of the
most notable finding of all: evidence for a whole new
universe beyond our own. For millennia, philosophers
have insisted everything we see is part of the
all-encompassing totality called the universe. And for
centuries, astronomers have been mapping its
immensity, using more and more powerful telescopes to
probe deeper into space. It seemed clear, however, that
there was a limit to what they could see, as they were
examining what was comprehensible for them. Since the
discovery of cosmic expansion, they believed there must
be a final frontier, but today, there is mounting
excitement that it may be possible to probe beyond this
far horizon. According to the latest theories in
cosmology, what has been regarded as the universe
might be just one of an infinite number making up
something far grander – the Multiverse. But the
Multiverse model is highly problematic; the biggest
difficulty is that the existence of such parallel universes
can be neither verified nor falsified. No less amazing, an
orbiting observatory, named Planck, has revealed many
features about our universe such as its age and size
since it was launched in 2009, and astronomers believe
it may be able to travel the Multiverse and do even
more.