Answered

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- Which of the following NEOs is the smallest?
A. comet
B. planetoid
C. asteroid
D. meteoroid​

Sagot :

1arieeidn

Explanation:

I believe it's meteoroid:)

OSTARAidn

A. comet

Explanation:

A comet is an icy, small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process that is called outgassing. This produces a visible atmosphere or coma, and sometimes also a tail.

Size

Comets are very small in size relative to planets. Their average diameters usually range from 750 meters (2,460 feet) or less to about 20 kilometers (12 miles).

Atmosphere

The atmosphere of a comet, called its "coma," is made of gas and dust that spew out of the sun-warmed nucleus. The atmosphere of a typical comet is wider than Jupiter. "It is possible," says Brain, "that the atmosphere of the comet will interact with the atmosphere of Mars.

Physical characteristics

Physical characteristics of a comet

Comets are composed of a nucleus, a coma, and a tail. The nucleus is the solid, central part of a comet made of rock, dust, and frozen gases. The nucleus is typically less than 16 kilometers across. It is one of the darkest objects in the solar system.

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