Question

A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.


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Answer 1

Answer:

Telex, international message-transfer service consisting of a network of teleprinters connected by a system of switched exchanges. Subscribers to a telex service can exchange textual communications and data directly and securely with one another.

Explanation:

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Answer 2

Answer:

A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.