What phenomenon in multiple star systems can cause a star to lose gas to a companion?

Answer

Tidal forces

When two stars orbit closely in a multiple star system, they exert gravitational forces on one another. If one star moves too close to its companion, tidal forces become strong enough to strip gas directly from the other star. This exchange of material can significantly alter the evolutionary trajectory of both stars involved in the interaction.

What phenomenon in multiple star systems can cause a star to lose gas to a companion?

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What are stars? Astro-Investigates Ep. 3 (Stars) - YouTube

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