astronómicas
Astronómicas is the feminine plural form of the Spanish adjective astronómico, meaning related to astronomy. The term is used to describe feminine nouns linked to astronomy, such as investigaciones astronómicas, imágenes astronómicas, observaciones astronómicas, and more broadly to denote subjects, phenomena, or objects associated with the science of astronomy. The root comes from the Greek astron “star” and nomos “law” or “custom,” and entered Spanish through scientific and educational vocabulary.
Grammatical notes: As an adjective, astronómicas agrees in gender and number with the noun it modifies, and