molecular clouds
[məˈlɛkjələr klaʊdz]
nounpl: molecular clouds
nuvens moleculares
1. Large, dense clouds of gas and dust in interstellar space composed primarily of molecular hydrogen (H2) and other molecules, serving as stellar nurseries where new stars form
Astronomers discovered several new star-forming regions within the molecular clouds of the Orion Nebula.
Astrônomos descobriram várias regiões novas de formação de estrelas dentro das nuvens moleculares da Nebulosa de Orion.
2. Cosmic structures characterized by temperatures near absolute zero and densities millions of times greater than Earth's atmosphere, extending across light-years
The molecular clouds in the Sagittarius region are among the most active star-forming sites in our galaxy.
As nuvens moleculares na região de Sagitário estão entre os sítios mais ativos de formação de estrelas em nossa galáxia.
This is primarily scientific terminology used uniformly across English and Portuguese-speaking astronomical communities. The term reflects the international nature of space science research, with 'molecular clouds' being essential concepts taught in university physics and astronomy programs in both Brazil and Portugal. The study of these structures has become increasingly important with advances in infrared telescopy and space observation.
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