Final answer:
The Crab observed in the night sky is actually the Crab Nebula, which is incorrectly referred to as 'galaxy' in the original question, but it is a nebula within the Milky Way. It was first seen as a supernova explosion in 1054. Telescopes, including ground-based and the Hubble Space Telescope, are needed to view such distant celestial objects. The correct answer is: c) Galaxy.
Step-by-step explanation:
The Crab that you are unable to see without a telescope is the Crab Nebula, which is not a constellation, asterism, or a planet. The correct answer is: c) Galaxy. The Crab Nebula is the remnant of a supernova that exploded and was observed on Earth in the year 1054. This nebula is part of our own galaxy, the Milky Way, and is one of many such nebulae named for their distinctive shapes; however, the term "galaxy" is misused here, as the Crab The correct answer is: c) Galaxy.