The Spectrum of a Galaxy Is Observed to Have an H

question 27

Essay

The spectrum of a galaxy is observed to have an H $\alpha$ emission line at a wavelength of 928.7 nm.What is its redshift? (Note that the rest wavelength of the H $\alpha$ emission line is 656.3 nm.)

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Definitions:

Illegal Immigration

The act of moving into or residing in a country without the legal permission of the government.

Foreign Policy

A government's strategy in dealing with other nations, involving diplomacy, security, and economic interests.

Fiscal Policies

Government policies regarding taxation and expenditure decisions designed to influence a country's economy, including methods to manage inflation, unemployment, and stimulate economic growth.