Yes, observatory is a common, singular, concrete noun.
The singular possessive form for the noun observatory is observatory's.Example: The observatory's admission is half price for children.
No, Mount Wilson Observatory and Griffith Observatory are two distinct observatories in Los Angeles. Mount Wilson Observatory is located in the San Gabriel Mountains and is known for housing the Hooker Telescope, while Griffith Observatory is located in Griffith Park and is a popular public observatory with educational exhibits and planetarium shows.
Fernbank Observatory was created in 1967.
SFA Observatory was created in 1976.
Asiago Astrophysical Observatory was created in 1942.
The singular possessive form for the noun observatory is observatory's.Example: The observatory's admission is half price for children.
Yes, the noun observatory is a common noun, a word for any observatory.A proper noun is the name of a person, place, thing, or a title; for example:The Griffith Observatory, Los Angeles, CAObservatory Mountain, near Lincoln, MEObservatory Street, Bennington, VTThe Observatory Cafe at the Royal Botanic Gardens, South Yarra VIC, Australia
Observatory is a noun. Nouns don't have antonyms, only some adjectives and adverbs and some special verbs do.
I take that you are asking 'astronomical observatories'. 'Observatory' is a noun, observatories is the plural form. Astronomical is simple a modifier (adjective, in this case.)
Those are the observatories.
The name of the observatory in Chicago is the Adler Planetarium.
No, Mount Wilson Observatory and Griffith Observatory are two distinct observatories in Los Angeles. Mount Wilson Observatory is located in the San Gabriel Mountains and is known for housing the Hooker Telescope, while Griffith Observatory is located in Griffith Park and is a popular public observatory with educational exhibits and planetarium shows.
The observatory is in Green Bank.
Jura Observatory was created in 1993.
Detroit Observatory was created in 1854.
Sphinx Observatory was created in 1937.
Ursa Observatory was created in 1926.