If we can measure the period of a star's "wobble" caused by an orbiting planet, we know the _. If we can measure the period of a star's "wobble" caused by an orbiting planet, we know the _. period of the planet's orbit. distance to the planet. mass of the planet. distance to the star.

Detecting a star's wobble is one way to find out if there are planets orbiting it, this happens because the planet is “tugging” on it, the gravitational force from the star acts to keep the planet in orbit, and the gravitational force from the planet acts to move the star as the planet orbits. Scientists can use the wobble to work the planet's mass and the distance from the star.

Considering this information we can conclude that the correct answer is distance to the planet and mass of the planet.

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If we can measure the period of a star's "wobble" caused by an orbiting planet, we know the _______. If we can measure the period of a star's "wobble" caused by an orbiting planet, we know the _______. period of the planet's orbit. distance to the planet. mass of the planet. distance to the star.

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If we can measure the period of a star's "wobble" caused by an orbiting planet, we know the _. If we can measure the period of a star's "wobble" caused by an orbiting planet, we know the _. period of the planet's orbit. distance to the planet. mass of the planet. distance to the star.