Correct Answer: Constellation

Solution : The correct choice is the first option.

A constellation is a group of stars that forms a recognisable pattern or shape in the celestial sphere. Constellations are often named after mythological characters, animals, or objects, and they have been used for navigation and storytelling throughout history.

The meanings of the other options are as follows:

• Comet : A celestial object composed of ice, dust, and gases that orbits the sun and develops a bright, glowing coma and sometimes a tail.
• Horizon : The apparent line that separates the earth from the sky; the limit of a person's mental perception, experience, or interest.
• Planet : A celestial body that orbits around a star, is spherical in shape, and has cleared its orbit of other debris.

Therefore, the correct answer is constellation.