Proxima Centauri b

Lore & Background

Proxima Centauri b exists in a turbulent system dominated by its red dwarf host. Unlike Earth’s stable sun, Proxima unleashes violent flares that threaten planetary atmospheres. Despite this volatility, the 'Goldilocks zone' position allows for theoretical liquid water—provided a magnetic field shields the surface from radiation. Likely tidally locked, the planet presents a stark dichotomy: a scorching dayside facing a motionless star and a frozen nightside cloaked in darkness. Survival may hinge on the terminator line, the twilight ring where heat redistribution could sustain an atmosphere.

In Their Own Story

The telescope's sensors hummed with a low, rhythmic vibration as it locked onto the faint red glow of Proxima Centauri. There, hidden in the glare of the dwarf star, was the shadow: Proxima b. It did not shine like Earth; it was a dark silhouette against the crimson backdrop, a silent wanderer caught in an eternal dance. On its day side, the sun hung motionless in the sky, a bloated, angry ember casting long, unchanging shadows. On the night side, the stars were bright and cold, untouched by the glare of a rising or setting sun. Between them lay the terminator, a band of perpetual twilight where the air might still breathe, waiting for a signal that had not yet arrived.

Reader's Guide

Proxima Centauri b orbits the red dwarf Proxima Centauri, which is part of the Alpha Centauri triple-star system and lies approximately 4.24 light-years from Earth. This discovery shifted astronomical focus to our immediate cosmic backyard.

Did You Know?

• Proxima Centauri b is the closest known exoplanet to our Solar System.
• The planet orbits its star in just 11.2 Earth days due to the star's low luminosity.
• It receives roughly 65% of the solar energy that Earth receives from the Sun.
• A spacecraft traveling at current propulsion speeds would take tens of thousands of years to reach it.