If the Distance to a Star Is 450 Light-Years, What

question 18

Multiple Choice

If the distance to a star is 450 light-years, what can we conclude about the star?

• A) The star is 450 million AU away.
• B) The star's light takes 450 years to reach us.
• C) The star must have formed 450 billion years ago.
• D) The star must be very young.

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Definitions:

Visual Input

Information received by the eyes that is then processed by the brain.

Saccadic Movements

Rapid, jerky movements of the eyes used in scanning a visual scene, as opposed to smooth tracking movements.

Milliseconds

A unit of time equal to one thousandth of a second, commonly used to measure the timing of very quick events.

Characters

The people or beings in a story, play, or other literary work who carry out the action and dialogue, contributing to the work's plot and theme.