Black Holes,by Definition,cannot Be Observed Directly

question 1

Multiple Choice

Black holes,by definition,cannot be observed directly.What observational evidence do scientists have of their existence?

• A)Theoretical models predict their existence.
• B)Gravitational interaction with other objects.
• C)Space is,overall,very black.
• D)We have sent spacecraft to nearby black holes.
• E)We have detected neutrinos from them.

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Definitions:

Regressive

Refers to systems, especially tax systems, where the rate decreases as the amount subject to taxation increases, placing more of a burden on low-income earners.

OECD

The Organisation for Economic Co-operation and Development, an international organization that works to build better policies for better lives, promoting policies to improve the economic and social well-being of people around the world.

Progressive Tax System

A tax structure where the tax rate increases as the taxable amount or income increases, placing a larger financial burden on higher-income earners.

Tax System

The structured collection of laws and regulations that govern how taxes are collected, managed, and utilized by a government.