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What Is a Black Hole ?

Firstly, a black hole is a place in space where types of black holes like a “Stellar”. They are
there is so much gravity that even light can not massive with a mass of 20 times more than the
get out. Gravitational pull gets stronger as mass than that of sun. There are many stellar mass
gets more condensed into a tiny space. For black holes in our galaxy. However, the biggest
example, if we squeezed the world in a cubic ones are called massive black holes. These black
centimeter of volume, it would become a black holes have masses that are more than 1 million
hole. This also can happen when a star is dying. suns combined together. Researchers have
discovered evidence that each galaxy contains
Can We Observe a Black Hole ? a supermassive black hole at its middle.

Since light can not get out , people can’t see black Sagittarius A is the name of the supermassive
holes. They are invisible . Space telescopes with black hole at the center of the Milky Way. It has
special tools can help us find them, with these a mass equal to around 4 million Suns, and
tools, we can observe the strange behaviours could fit a few million Earths inside a football.
of stars which are very close to black holes. Additionally, a theory of a black hole called The
Great Attractor points out the gravitational
How Big are Black Holes ? anomaly in intergalactic space and the apparent

Black holes can be big or small. Scientists say central gravitational point of the Laniakea
that the smallest black holes are as small as an Supercluster. The observed anomalies show
atom. These black holes are tiny but have the that a localized concentration of a mass millions
mass of a large mountain. ( Mass is the amount of times more massive than the Milky Way.
of matter in an object.) There are many different

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