Astronomers Discover 27 Potential New Planets Orbiting Two Stars on Star Wars Day
May 4, 2026 — On “Star Wars Day” (May the Fourth Be With You), astronomers announced an exciting discovery: they have identified 27 potential circumbinary planets — worlds that orbit a pair of stars. The finding more than doubles the number of known circumbinary planet candidates.
What Are Circumbinary Planets?
Circumbinary planets are planets whose orbits encompass a binary star system — two stars that revolve around each other. The most famous fictional example is Tatooine from the Star Wars franchise, Luke Skywalker’s home world where two suns rise in the sky.
In 2011, NASA’s Kepler Space Telescope confirmed the first real circumbinary planets. Since then, astronomers have confirmed only a handful. The 27 new candidates announced today, if verified by follow-up observations, would dramatically expand our understanding of these unique planetary systems.
Discovery Method
The research team used the transit method combined with advanced data analysis techniques to re-examine existing telescope data. When a planet passes in front of a star, it causes a tiny dip in the star’s brightness — by analyzing the pattern of these “transit” signals, researchers can infer the presence of planets and their orbital characteristics.
In binary star systems, the transit signal pattern is far more complex than in single-star systems because both stars are in motion. The researchers developed new algorithms to identify these unique signal patterns, leading to the identification of the 27 candidates.
Scientific Significance
The discovery of circumbinary planets has important implications for understanding planet formation. For a long time, astronomers questioned whether planets could form in the complex gravitational environment of a binary system. The gravitational perturbations caused by two stars orbiting each other could theoretically prevent planet formation.
The large number of candidates found in this study suggests that planet formation in binary systems may be more common than previously thought. This provides new constraints on planet formation theories and hints that the galaxy may harbor many Tatooine-like worlds.
Follow-Up Verification
The research team emphasized that the 27 candidates still require confirmation through follow-up observations. They plan to use the James Webb Space Telescope (JWST) and next-generation ground-based telescopes to perform radial velocity measurements and atmospheric characterization of these candidates.
If most of them are confirmed, this would be the largest single circumbinary planet discovery in history, fundamentally transforming our understanding of how planetary systems form and evolve in complex gravitational environments.
Source: The Guardian