ray of hope; promising talent
Idiomatic expression literally meaning 'star of hope'. Used for a person or thing that brings hope, like a promising young athlete or a breakthrough idea.
He is the team's ray of hope.
This new technology may become a ray of hope for the industry.
Compound of 希望 (hope) + の (possessive particle) + 星 (star). The exact origin is uncertain, but it is a natural metaphor for a guiding or hopeful star.