Throwback Thursday: Is Earth’s Twin Out There? (Synopsis) [Starts With A Bang]

“You can spend too much time wondering which of identical twins is the more alike.” –Robert Brault

Earlier today, NASA announced the “most Earth-like exoplanet yet,” a planet just 60% larger in radius than our own, orbiting a star of the same spectral class as our Sun and with an almost identical orbital period: 385 days.

Image credit: NASA/JPL-CalTech/R. Hurt.

But is this really the most Earth-like planet we’ve discovered? It’s significantly larger and five times as...

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