The Mystery of Planet Nine | How the Universe Works | Science Channel

A mysterious ninth planet lurks in the outer reaches of our solar system and it’s a giant: ten times the mass of the Earth. But why is it so hard to catch a glimpse of?

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With a cast of experts and eye-popping CGI, we're looking under the celestial hood to tell the greatest story of all -- the story of where we and everything else came from.

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[Jamal]

These are the type of documentaries that made me love the science channel at first, great job with this one.

[hsiang]

Always love this series! Thanks for uploading this!

[DATASTICO]

Very interesting presentation. Thank you!

[emansfvera]

It's nibiru, they speak about it on the summerian tablets of enki. They had our complete solar system mapped out 5000 years ago.

[jbx.]

Pioneer 10 and 11 found the X planet and the Dwarf sun, in the 70's

[TTallon]

It's pretty crazy what modern math and simulations can show. Even that there is another planet in the solar system

[Jay]

"No we aren't actually driving 18 miles for this, just make a 180 and start filming me."

[sagemagick]

You what's crazy that if we'd just listened to all those people whom we deemed crazy for believing there was a 9th planet we could have found it years ago

[amanipantam]

Very broad scientific analysis about planet which is in our solar system, is unknown till now

[kRobot]

It’s fascinating how when in scale like this it puts things in insane perspective for me. Imagining t he earth being about 60 meters from the sun while Planet 9 is 18 miles is much easier to comprehend than the 800 AU. One AU is exactly 149, 597, 870, 700 meters. 150 billion meters in one AU. Geez Louise. I’m blowing my mind right now now. 🤯

[kmiller]

Planet X…..because it was named when Pluto was still considered a planet….Niburu ❤

[fieldguy]

Despite what people say Pluto is a planet and is planet #9 so this one is #10

[MisterTee]

There are nine planets. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and PLUTO

[Zer_._]

Pluto is planet 9. Ohana means family. So that would make Nibiru planet X.

[azradil]

We are piece of sand on the gigantic universe. Our life time is not even a second over there

[ilikedabeans]

Caterpillar appreciates the free advertising on one of your shows.

[kRobot]

The sun is a kickball, earth is a peppercorn, Saturn a lollipop, and planet 9 a BB.

[ElijahClark-itrt]

I love how the universe constantly reminds us that we aren’t as smart as we think we are:

Mankind always says that something doesn’t exist and then we are faced with the reality that it actually does!! Lol

[Scientist_Albert_Einstein]

is this the planet 9 that the ancient's recorded in their petroglyphs?

[ericsynchrona]

Um, hey Bugs Bunny, it's called Planet X.