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Edition #30 · Monday, June 15, 2026 · 1831 positive stories
Science & Breakthroughs

NASA's proposed Early eVolution Explorer mission aims to solve the radius valley mystery

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NASA's proposed Early eVolution Explorer mission aims to solve the radius valley mystery

A debate has been raging among planetary scientists for more than a decade-why are there so few exoplanets with a radius of about 1.8 times that of Earth? Exoplanets are currently largely grouped into two distinct categories-"super-Earths" are below that size and have rocky interiors, whereas "sub-Neptunes" are above that size limit and appear puffier. But researchers don't really understand why the path of planetary evolution forces this bifurcation. A new mission proposal, called the Early eVo

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About Science & Breakthroughs coverage

The science section covers breakthroughs in medicine, physics, biology, and technology. We surface discoveries that expand what humanity can do, from new treatments reaching clinical trials to engineering feats that seemed impossible a decade ago. Every link goes to the original publisher so you can read the full study or press release yourself.

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