Choose two options from the following list. Then, complete sentences, explain how they are different. (Hint: Think about their characteristics and how they are formed.)

(A) Star and planet

(B) Asteroid and comet

(C) Meteoroid and comet

(D) Galaxy and constellation

Keep this short and simple.

3 answers

I will choose (A) Star and planet and (B) Asteroid and comet.

Stars are massive celestial bodies that produce light and heat through nuclear fusion in their cores, while planets are smaller objects that orbit stars and do not generate their own light. Stars are formed from collapsing clouds of gas and dust, while planets develop from the leftover material in a star's protoplanetary disk.

Asteroids are rocky, metallic objects that orbit the Sun, mostly found in the asteroid belt between Mars and Jupiter, and are remnants from the early solar system. Comets, on the other hand, are composed of ice, dust, and rocky material, and originate from the outer regions of the solar system, often forming tails when they approach the Sun due to sublimation.

Shorten the choices a little

I will choose (A) Star and planet and (B) Asteroid and comet.

Stars are large celestial bodies that produce light through nuclear fusion, while planets are smaller objects that orbit stars and do not emit their own light. Stars form from collapsing clouds of gas; planets arise from residual materials in a protoplanetary disk.

Asteroids are rocky objects that orbit the Sun, mainly in the asteroid belt, while comets are icy bodies from the outer solar system that develop tails when near the Sun due to melting.