SMRTR Science & EngineeringSep 28, 2025Live Science

It's official: Humans have found 6,000 planets beyond our solar system

SMRTR summary

Astronomers have officially confirmed 6,000 planets beyond our solar system, marking a dramatic milestone since the first exoplanet discovery in 1992. These discoveries reveal bizarre worlds unlike anything in our solar system, including hot gas giants orbiting their stars in days, tidally-locked planets with scorching and frozen sides, and worlds that may rain iron or have styrofoam-like density.

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