Stars emit their own light.

Meaning: This means that stars generate the light that we see, rather than reflecting light from other sources.

Choice of Words: Stars are objects in space that emit light. Emit means to release or send out something, such as light or heat. Their is a possessive adjective used to indicate ownership or belonging. Own means belonging to the person or thing mentioned. When you put them together, "Stars emit their own light" expresses the fact that stars produce their own illumination.

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