The two different kinds of surveys that have given astronomers great insight into the structureand expanse of the universe are:
A)pie slice and pencil beam.
B)pie slice and redshift survey.
C)pencil beam and deep imaging.
D)pie slice and local surveys.
E)deep space survey and pencil beam.

Question

Quizplus · Accepted Answer

Pie slice and pencil beam surveys are two methods used by astronomers to study the universe. The pie slice survey covers a narrow, wedge-shaped section of the sky to sample a broad range of distances and environments, while the pencil beam survey focuses on a very narrow area of the sky to great depths, allowing astronomers to detect faint, distant objects and study the structure of the universe at various scales.

The Two Different Kinds of Surveys That Have Given Astronomers