SEXTANT (Station Explorer for X-ray Timing and Navigation Technology) #neutronstars #cosmicfacts

Ajouté : 2026-06-07

[00:00:00]This GPS doesn't use satellites. It doesn't use signal. It uses corpses, stars that died billions of years ago, and somehow they're still sending perfectly timed pulses across the universe.

[00:00:15]When a massive star collapses, it becomes a pulsar, a city-sized object spinning hundreds of times per second, like a lighthouse in the dark.

[00:00:25]That rhythm never drifts, never slows, never changes.

[00:00:30]More precise than anything humanity has ever built. Because in deep space, Earth's GPS just disappears. And without a reference, you're blind. So, the NASA-built sextant, tested aboard the International Space Station, using those pulses to calculate position without relying on Earth.

[00:00:51]Future spacecraft will navigate alone, guided by dead stars in the absolute silence of space, where even the dead still show the way. In a universe that was never what it seemed.