A debate has been raging amongst planetary scientists for over a decade - why are there so few exoplanets with a radius of about 1.8 times that of the Earth? Exoplanets are currently largely grouped into two distinct groups - “super Earth” are below that size and have rocky interiors, whereas “Sub-N...
NASA’s Proposed EVE Mission Aims to Solve the Radius Valley Mystery
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June 10, 2026 •
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Original source:
Universe Today
