Nota: A tradução desta entrada está atualmente em revisão de qualidade, portanto parte do conteúdo é exibida temporariamente apenas em inglês.
Este verbete ainda não foi traduzido para o seu idioma, portanto o original é exibido abaixo.
protostar
This term describes the earliest stage of stellar evolution, evoking an image of a celestial object in a state of collapse and accumulation. It carries a connotation of potential and instability, as the object is not yet a true star but a precursor gathering the necessary mass to ignite.
In astronomical discourse, the word is used to distinguish these nascent objects from main-sequence stars. Because it refers to a specific physical entity, it follows standard English countability rules for objects, though it is almost exclusively used in scientific or educational contexts rather than casual conversation.
Meanings
Examples
The telescope captured a clear image of a protostar forming within the nebula.
A protostar continues to accumulate mass from the surrounding gas cloud.
A protostar continues to accumulate mass from the surrounding gas cloud.
Look at this data, it seems we have found a protostar in the Orion complex.
The core of a protostar is not yet hot enough to trigger nuclear fusion.
I wonder how long it takes for a protostar to become a main sequence star.
Infrared observations are essential for seeing through the dust to find a protostar.
The gravitational collapse of a molecular cloud eventually creates a protostar.
The gravitational collapse of a molecular cloud eventually creates a protostar.
Imagine a giant cloud of gas condensing into a tiny, glowing protostar.