Kepler-398 b: Orbits in the Furnace

Added: 2026-05-28

[00:00:00]Imagine a world that where the sky is ruled by a massive orange [music] sun.

[00:00:05]So close it fills half the heavens.

[00:00:11]This is Kepler-398b, a rocky exoplanet orbiting just 4 million miles from its star.

[00:00:19]That's 10 times closer than Mercury is to our sun.

[00:00:24]Here, a year lasts only four Earth days.

[00:00:28]Each sunrise brings a wave of heat pushing temperatures past 480° C. Celsius.

[00:00:36]The atmosphere, if it exists, is thin, scorched, and battered by fierce radiation.

[00:00:43]Nothing like Earth's gentle blue.

[00:00:46]Gravity here feels almost the same as home, but with a colossal star looming overhead, every shadow flickers with danger.

[00:00:56]Kepler-398b reminds us not all Earth-sized worlds are welcoming. Some orbiting in the furnace are forged in extremes.

[00:01:09]Kepler's Echo, where science meets wonder.