What Do Astronomers Mean When They Say That We Are

question 120

Multiple Choice

What do astronomers mean when they say that we are all "star stuff"?

• A)that life would be impossible without energy from the Sun
• B)that Earth formed at the same time as the Sun
• C)that the carbon,oxygen,and many elements essential to life were created by nucleosynthesis in stellar cores
• D)that the Sun formed from the interstellar medium: the "stuff" between the stars
• E)that the Universe contains billions of stars

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Definitions:

Eyebrows

The strips of hair located above the eyes on the face, serving functions related to expression, facial recognition, and protection of the eyes.

Eyelids

The movable pieces of skin that cover and protect the eyes when closed and help to spread moisture (tears) over the surface of the eyes when they blink.

Eyelashes

The short, curved hairs growing on the edge of eyelids, serving to protect the eyes from debris and aid in moisture retention.

Conjunctivas

The mucous membranes that cover the front surface of the eyeball and the inner surface of the eyelids, acting as a protective barrier.