Question

nikki is an astronomer who has been observing objects that orbit the sun in the asteroid belt. she finds a previously undiscovered round, rocky object that is not similar in shape to the rest of the asteroids. what has nikki most likely found?
a new dwarf planet
a new asteroid
a new moon
a new comet

Explanation:

A dwarf planet is a rocky object in the solar - system that is not similar in shape to the rest of the asteroids. Asteroids are irregularly - shaped rocky objects. A new dwarf planet is a likely find when discovering a rocky object with unique shape characteristics in the solar system. New galaxies are outside the solar system, new moons usually orbit planets and have specific relationships with their host planets, and comets have distinct tails and orbits different from typical rocky objects in the asteroid - belt area.

Answer:

a new dwarf planet