The earth

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TRAPPIST-1e: 7 Earth-Sized Worlds in One Solar System

This star system broke NASA. TRAPPIST-1 has seven rocky planets, and three of them sit in the habitable zone. TRAPPIST-1e is the best bet for life.

Why TRAPPIST-1e wins:

  • Size: 0.92x Earth. Almost identical.
  • Density: Matches Earth. Means it’s rocky with an iron core.
  • Distance from star: Gets about the same sunlight Earth gets.
  • Tidally locked: One side always faces the star. One side always night.

The system is 40 light-years away. That’s 235 trillion miles. But James Webb Telescope already looked at TRAPPIST-1e in 2024. No thick hydrogen atmosphere found - which is good. Means it could be Earth-like, not a mini gas giant.

The crazy part: All 7 planets are closer to their star than Mercury is to our Sun. You could see the other planets in the sky like we see the Moon. Standing on TRAPPIST-1e, the other planets would look massive.

The problem: Red dwarf stars are violent. TRAPPIST-1 flares a lot. But TRAPPIST-1e might have a magnetic field shielding it. Webb is checking for water vapor right now.

Why this matters: If one system has 7 Earth-sized planets, the galaxy is packed with them. The Drake Equation just got friendlier.

We won’t visit soon. But if life is anywhere, TRAPPIST-1e is on the shortlist. Three planets in the habitable zone beats our solar system’s one.

Follow Technation for more space drops.

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