This Star Sends Perfect Signals Scientists Can't Explain

[00:00:00]There's a star out there sending signals so perfectly timed it's literally keeping better time than atomic clocks.

[00:00:06]A pulsar.

[00:00:08]Spinning hundreds of times per second.

[00:00:11]Each rotation sends a beam of radiation straight at Earth like clockwork.

[00:00:16]Scientists thought aliens built it.

[00:00:19]They didn't.

[00:00:21]What's actually happening is so much stranger.

[00:00:25]This neutron star is so dense that a teaspoon of its material would weigh 6 billion tons.

[00:00:31]It's the leftover core of a dead star.

[00:00:34]And here's what keeps physicists up at night.

[00:00:37]These pulsars are speeding up.

[00:00:40]Getting faster.

[00:00:42]Some are literally rotating thousands of times per second.

[00:00:46]We still don't fully understand why.

[00:00:49]But what if they're not just random cosmic objects?

[00:00:53]What if there's something else entirely?