Black holes can be
thought of as
condensed stars
which have
collapsed in on
themselves to form
a very dense ball
of mass. There are
stellar sized
black holes and
supermassive black
holes.
Supermassive black
holes have density
approximately that
of water, (Berman
2014). The reason
a black hole is
called a black
hole is that
gravity at a
certain distance
from this massive
condensed matter
is at a high
enough
acceleration that
light cannot
escape its grasp.
The matter in a
black hole is
condensed, unlike
matter here on
earth and on the
sun where the
matter is at
“normal” levels. A
condensed object
such as a black
hole is one in
which the matter
has shrunk to a
point that the
gravity a certain
distance from the
object is stronger
than the speed of
light. This is why
it is possible
that our sun could
become a black
hole without any
additional matter
being fed into it.
Bob Berman writes
that:
"Because
gas is easy to
compress, it
makes sense
that the Sun's
huge
gravitational
pull --
333,000 times
greater than
Earth's --
someday could
force our star
to shrink much
smaller. When
the core's
fusion factory
shuts down,
its
outward-pushing
gas pressure
no longer will
be able to
counteract
gravity's
inward pull."
(Berman,
2014)
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