Lightyear is a noun.
Aurora is a noun.
Eyepiece is a noun.
It is a present tense noun.
Extraterrestrial is an adjective, meaning not of this Earth.
"night" is a noun
determiner
"night" is a noun
Nocturnal is an adjective - pertaining to the night
"Night" is a noun. It refers to the period of darkness between sunset and sunrise.
"Tuesday night" is a two word adverb of time. For those who insist that a part of speech must be a single word, "night" is an adverb modifying "gathered" and "Tuesday" is an adverb modifying "night".
It is an adverb. Obviously.
Chicken curry :P
Sleepy is an adjective; it modifies nouns.
"Craig's" is a possessive noun.
part of speech
The part of speech for this particular word is a noun.