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A planet and a star are having a tumultuous romance that can be detected from 370 light-years away.

NASA’s Spitzer Space Telescope has detected unusual pulsations in the outer shell of a star called HAT-P-2. Scientists’ best guess is that a closely orbiting planet, called HAT-P-2b, causes these vibrations each time it gets close to the star in its orbit.

Julien de Wit, postdoctoral associate at the Massachusetts Institute of Technology, Cambridge, said:

Just in time for Valentine’s Day, we have discovered the first example of a planet that seems to be causing a heartbeat-like behavior in its host star.

A study describing the findings was published today in Astrophysical Journal Letters.

The star’s pulsations are the most subtle variations of light from any source that Spitzer has ever measured. A similar effect had been observed in binary systems called “heartbeat stars” in the past, but never before between a star and a planet.

> Read the full story at JPL News.