The Smoothest Object in the Universe

Ajouté : 2026-05-27

[00:00:00]Scientists just discovered an object so dense that a sugar cube of it would weigh as much as a hundred million cars, yet its surface is smoother than [music] anything humans have ever created. We're talking about a neutron star called RXJ18565-3754, [music] and it's absolutely wild. This thing is only 14 miles across.

[00:00:19]>> [music] >> You could drive across it in about 20 minutes.

[00:00:23]But here's where it gets insane. It contains more mass than our entire sun [music] squeezed into that tiny space.

[00:00:29]The Chandra X-ray Observatory measured its surface and found something impossible. The variations in its crust are less than a millimeter. That's smoother than a polished mirror, smoother than a silicon [music] wafer, smoother than anything we can manufacture in laboratories. If you scaled this [music] neutron star up to the size of Earth, the tallest mountain would be smaller than a grain of sand.

[00:00:49]A single sugar cube-sized chunk of this material would weigh about 100 million tons on Earth. That's the weight [music] of an entire mountain compressed into something you could hold in your hand.

[00:00:58]What makes this even crazier is that matter this dense might exist in a completely unknown phase of physics. We don't even have a name for what's happening on that surface. It's matter so extreme that our current understanding of physics [music] might not apply.