A comet has been located orbiting the sun at an average distance from the sun of 28 AU and an eccentricty of 0.97. Calculate the perhelion distance of the comet and comment on whether or not the comet is a danger to Earth.

i was thinking more like reflects green light, just not sure

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.

this could be newton#'s law of cooling. the cooling curve is exponential