The Planet Scientists Almost Un-Discovered.

In 2015, NASA announced Kepler-452b — Earth's "bigger, older cousin." 🌍

1,400 light-years away in the constellation Cygnus, it orbits a Sun-like G2 star every 385 days, right inside the habitable zone. Sixty percent wider than Earth, it was the closest match to our world ever found.

Then, in 2018, astronomers found a flaw in the validation math — and the planet's chance of being real crashed from 99% to as low as 16%. Kepler-452b was almost un-discovered.

But in September 2025, a brand-new method rechecked the signal star by star, and put the false-alarm chance under 1%. Kepler-452b was vindicated.

A decade of doubt — erased. 🔭