What Is the "Cosmological Redshift

question 21

Multiple Choice

What is the "cosmological redshift"?

• A) stretching of the wavelengths of photons as they travel through expanding space
• B) stretching of the wavelengths of photons by the Doppler shift because they are emitted by galaxies that are moving away from Earth
• C) loss of energy from photons interacting with virtual particles in the vacuum, resulting in the wavelength of the photons gradually increasing as they travel toward Earth through space
• D) stretching of the wavelengths of photons as they pass through absorbing matter in galaxies between Earth and the emitting galaxy

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Definitions:

Principle Of Falsifiability

The criterion for demarcating scientific from non-scientific statements; a theory must be testable and potentially able to be proven false.

Denialism

The choice to reject information or evidence that conflicts with an individual's beliefs, often seen in contexts such as climate change denial.

Cognitive Inertia

The tendency of certain cognitive processes or sets of beliefs to resist change, even in the face of new information or evidence.

Scientific Attitudes

The qualities and approaches necessary for effective scientific inquiry, including skepticism, openness to revision, and reliance on empirical evidence.