tähtitieteellisten

Tähtitieteellisten is the genitive plural form of the Finnish adjective tähtitieteellinen, which means "astronomical" or "related to astronomy." It is used to describe a noun that is itself in the genitive case, most often in formal or academic phrases such as "tähtitieteellisten ilmiöiden tutkimus" (the study of astronomical phenomena) or "tähtitieteellisten hankkeiden rahoitus" (funding of astronomical projects).

In Finnish, adjectives agree with the nouns they modify in number and case. When the noun is in the genitive plural, the adjective takes the ending -isten, producing forms like tähtitieteellisten. This contrasts with the nominative plural tähtitieteelliset, which would describe a plural noun in its base form, e.g., tähtitieteelliset ilmiöt (astronomical phenomena).

The term is primarily encountered in written, formal, or scientific Finnish. It is common in academic writing, research descriptions, grant proposals, and encyclopedia-style entries that discuss astronomy-related topics. In everyday language, speakers may use straightforward phrases such as tähtitieteellinen ala or simply astronomy-related terms without the genitive adjective form.

Related concepts include tähtitiede (astronomy), tähtitieteellinen (astronomical), and common Finnish case and agreement patterns for adjectives. Understanding tähtitieteen-related phrases helps in parsing and constructing precise, formal descriptions of astronomical topics in Finnish.