The Hipparcos Satellite Was Able to Measure Parallax for Stars

question 174

Multiple Choice

The Hipparcos satellite was able to measure parallax for stars out to about 150 pc.This distance includes roughly 2.5 million stars.What is the average number of stars in one cubic parsec?

• A) 5.1 X 10-³
• B) 0.18
• C) 5.65
• D) 8.84

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Definitions:

Reintegration

Involves the process of integrating someone back into society or a specific community, often after a period of isolation, imprisonment, or treatment.

Consolidation

The process by which memories become stable in the brain, transitioning from a short-term to a long-term state.

Ebbinghaus

Hermann Ebbinghaus was a German psychologist known for his pioneering work on memory and learning, including the discovery of the forgetting curve.

Forgetting

The loss or inability to recall information or memories, which can result from various factors, including the passage of time or interference from other information.