Radial Velocity Quizzes, Questions & Answers

Where exactly do objects orbit? Planets don't actually orbit the center of a star—both objects orbit a shared balance point. This barycenter explained quiz explores the invisible "see-saw" point in every...

Heavier planets make bigger waves. A giant planet like Jupiter creates a much more noticeable tug than a small rocky world like Earth. This planet mass from wobble quiz looks at how the "strength" of a star's...

The math behind the music of the stars. To find a planet, we have to measure exactly how fast and how often a star's light waves change. This wave frequency and velocity quiz dives into the physics of wave mechanics in...

Color is the key to motion. When a star wobbles toward us, its light turns blue; when it pulls away, it turns red. This doppler shift explained quiz covers how we use shifting light colors to track invisible planetary...

The dedicated hunters of the deep sky. Specialized telescopes orbiting Earth have found thousands of planets by staring at the stars for years. This kepler and tess missions quiz highlights the history and tech behind our...