Average meta-particle size in transit for the tail produced by ejecting meta-particles with a spherically symmetric distribution from a planet of mass 8.4 × 10⁻⁶ M_⊕ and radius of0.020 R_⊕ at a velocity of 3.0 times the planet’s surface escape velocity (or 674 m s⁻¹). The black dotted line shows the average meta-particle size as a function of phase in transit in intervals of 1° while the solid blue line is convolved by the angular size of Kepler-1520 as seen from Kepler-1520 b, of 26°, to show that at different times during the transit, different meta-particle sizes dominate the contribution to the light curve. This excludes the meta-particles external to the stellar disk that contribute with scattered starlight.