Final answer:
The new Hayden Planetarium in New York City differs from the old Planetarium in terms of its location, architectural design, and the presence of a Zeiss projector.
Step-by-step explanation:
The new Hayden Planetarium differs from the old Planetarium in several ways. Firstly, it is located in New York City. Secondly, the building's roof is curved, providing a unique architectural design. Lastly, the new Hayden Planetarium features a Zeiss projector, which allows for a more immersive and accurate representation of the stars.