An Astronomer Would Like to Study a Region of the Universe

question 22

Essay

An astronomer would like to study a region of the Universe 100 Mpc across and 1 Gpc away from Earth,situated behind an obscuring cloud of dust,so he or she cannot directly measure light from the region.How could he or she measure the mass contained in this region?

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Definitions:

Never Recovered

A phrase indicating that something or someone did not return to a normal or original state after damage or loss.

Memorials

Structures, objects, or events created or held to remember and honor the memory of a person or event.

Grieving Process

A series of emotional stages experienced after the loss of a loved one, often comprising denial, anger, bargaining, depression, and acceptance.

Western Practice

Medical, legal, or cultural procedures and norms that are predominant or originating in Western countries.