Read the excerpt from A Black Hole is NOT a Hole.

It's terrific fun to read what the original thinkers had to say for themselves. I read parts of Relativity: The Special and General Theory by Albert Einstein, and found the letter about Einstein forgetting to eat lunch in Einstein: His Life and Universe by Walter Isaacson.

I also reviewed parts of Isaac Newton's Principia: The Mathematical Principles of Natural Philosophy (translated by Andrew Motte), to see what Newton himself had to say.

What makes these books credible sources?

The books give opinions and arguments about science.
Einstein and Newton are experts in their fields.
The books describe Einstein’s and Newton’s inner feelings.
Einstein and Newton persuade readers to their opinions.

As per the excerpt, the black hole is not a hole this states that the book is a credible source as einstne and newton were experts in their field.

What is a black hole?

A black hole is a cosmic body that has intense gravity from which even the light can't pass. The hole cannot be observed directly and has an effect on matter nearby the black hole gets its power from the stars and black matter. Albert Einstein was the first to discover that dark matter and that black hole exists. The text of the excerpt also tells us the same.

Find out more9fnrimation about the black hole.

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