Scientists Found a Planet With 3 Suns… and Its Orbit Shouldn’t Exist!

Added: 2026-05-23

[00:00:00]What if your sky had three suns, and night almost never came?

[00:00:04]Deep in the constellation Centaurus, about 320 light years from Earth, astronomers discovered a bizarre world called HD 131399AB, a planet orbiting not one, but three suns. You heard that correctly.

[00:00:23]Imagine standing on its surface, watching multiple sunsets paint the sky in glowing shades of gold, red, and blue. One major advantage? Constant sunlight could provide endless solar energy. Another? Stunning skies unlike anything humans have ever seen. But life there wouldn't be easy. Temperatures could swing wildly as the suns shift positions. And with almost no true darkness, sleep and natural life cycles could become a nightmare.

[00:00:54]Scientists still don't know if this strange planet could support life. But what they discovered next about its orbit changed everything.

[00:01:04]Watch more from Orion's Imagination Lab.

[00:01:08]Scientists discovered that HD 131399AB has one of the most unusual orbits ever observed, traveling around its main star while the other two suns orbit nearby in a complex gravitational dance.

[00:01:24]For part of its long orbit, the planet may experience continuous daylight because the three suns rarely set at the same time.

[00:01:32]Researchers were shocked because this chaotic orbit was once thought impossible, raising questions about how such a strange solar system could even remain stable.