Which best describes a comet?
A. a celestial object consisting of a nucleus of ice and dust and, when near the sun, a "tail" of gas and dust particles pointing away from the sun appear
B. rocky objects that size is not dominated by gravity
C. close to the sun, closely spaced orbits, small masses
D. far from sun, widely spaced orbits, large masses
Answer: A. a celestial object consisting of a nucleus of ice and dust and, when near the sun, a "tail" of gas and dust particles pointing away from the sun appear