A Bright,extended Object Appears in the Sky One Evening,visible to the Naked

question 66

Multiple Choice

A bright,extended object appears in the sky one evening,visible to the naked eye.Over the next several weeks,it moves across the sky,becoming brighter as it approaches the Sun and then fainter again as it moves away.After six weeks,it fades away.This is most likely a(n) :

• A) supernova.
• B) Earth-crossing asteroid.
• C) Trojan asteroid.
• D) comet.

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Definitions:

Outermost Shell

The last or farthest layer of an object or entity, often used to describe the external layer of atoms in chemistry or celestial bodies in astronomy.

Neutrons

Subatomic particles found in the nucleus of an atom; they are electrically neutral and along with protons, contribute to the atomic mass.

Ionic Bond

Chemical bond in which ions are attracted to one another by opposite charges.