Read this excerpt from "Why Are They Called Black Holes ?"
In this excerpt, the author's use of description
Astronomers can observe these effects. For example, when
a black hole passes through a cloud of dust, it pulls the dust
inside it like a big gravity-powered vacuum cleaner. When a
star passes too close to a black hole, the black hole pulls it
in and breaks up the star, spewing giant flashes of high
energy called gamma-ray bursts. And when scientists see
light bending even though there is no visible matter nearby,
they have evidence that there is an invisible black hole.
proves why black holes are so complicated.
details the high energy that stars have inside them.
explains how scientists know when a black hole is
nearby.
describes what a black hole looks like without the use of
special equipment