Modern Astronomical Observatories Sometimes Shine Lasers into the Sky Because

question 24

Multiple Choice

Modern astronomical observatories sometimes shine lasers into the sky because they:

• A) help guide the pointing of the telescope.
• B) allow corrections of atmospheric turbulence.
• C) decrease the atmospheric opacity.
• D) calibrate spectroscopes.

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Definitions:

BCC

Basal Cell Carcinoma, a common type of skin cancer that begins in the basal cells.

Meaning

The significance, definition, or explanation of something, often regarding language, symbols, or actions.

Biopsy

A medical test involving the extraction of sample cells or tissues for examination to diagnose disease.

CA

A term often used to abbreviate cancer or carcinoma, indicating a variety of diseases characterized by the uncontrolled division of abnormal cells.