Communications with Planets Outside the Solar System Are Most Likely

question 19

Multiple Choice

Communications with planets outside the solar system are most likely to be achieved using

• A) spacecraft of the kind that went to the moon.
• B) spacecraft that travel with the speed of light.
• C) spacecraft that travel faster than light.
• D) radio waves.

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Definitions:

Myopia

A condition that occurs when light entering the eye is focused in front of the retina; commonly called nearsightedness.

Glaucoma

A condition in which too much pressure is created in the eye by excessive aqueous humor. This excess pressure can lead to permanent damage of the optic nerves, resulting in blindness.

Cataracts

Cloudy areas that form in the lens of the eye that prevent light from reaching visual receptors.

Conjunctivitis

A contagious infection of the conjunctiva caused by bacteria, viruses, and allergies. The symptoms may include discharge, red eyes, itching, and swollen eyelids; also commonly called pinkeye.