Radius Valley · Fulton gap
unseel.com · super-Earths · mini-Neptunes · 1.8 R⊕
Gap ≈ 1.8 R⊕
Slope R ∝ P⁻⁰·¹
phase
Super-Earths (rock)
Mini-Neptunes (gas)
Escaping atmosphere
The valley · 1.8 R⊕
Unseel.com · Radius Valley