What's happening?

The Twilight Zone: 1x32

The Star

Onboard a spaceship an astrophysicist and a priest learn they have discovered a planet long dead and a transmitter emitting a signal for eons. They discover that the planet holds the last remains of a civilization, which died when their star went supernova.

The Twilight Zone: Season 1 Episode 32
Dec. 20, 1985