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Discovery

Maya Ruins of Copan, Honduras  [Amazing Places 4K]
00:08:28

Maya Ruins of Copan, Honduras [Amazing Places 4K]


1,717 观看 ·

Neil deGrasse Tyson: Can You Own Land on Mars?
00:03:52

Neil deGrasse Tyson: Can You Own Land on Mars?


3,231 观看 ·

Bill Nye: Cleaning the Environment with GMOs
00:02:56

Bill Nye: Cleaning the Environment with GMOs


4,617 观看 ·

Neil deGrasse Tyson Explains the Cosmic Ballet of the Earth and Moon
00:05:28

Neil deGrasse Tyson Explains the Cosmic Ballet of the Earth and Moon


2,005 观看 ·

How democratic is your country?
00:03:58

How democratic is your country?


2,587 观看 ·

How Fast is the Universe Expanding?
00:03:21

How Fast is the Universe Expanding?


4,708 观看 ·

Why Does The Moon Look So Big Tonight?
00:04:27

Why Does The Moon Look So Big Tonight?


2,988 观看 ·

How Dense is the Asteroid Belt?
00:05:17

How Dense is the Asteroid Belt?


507 观看 ·

Why Does Screaming Get Your Attention So Quickly?
00:01:51

Why Does Screaming Get Your Attention So Quickly?


4,529 观看 ·

How Can Black Holes Shine?
00:05:29

How Can Black Holes Shine?


550 观看 ·

How Quickly Does A Supernova Happen? The Stunning Speed of a Core Collapse Supernova
00:04:28

How Quickly Does A Supernova Happen? The Stunning Speed of a Core Collapse Supernova


4,439 观看 ·

This House Was Built In Just 36 Hours | Impossible Engineering
00:02:11

This House Was Built In Just 36 Hours | Impossible Engineering


2,001 观看 ·

What Strange Power Source Makes Jupiter So Hot?
00:02:21

What Strange Power Source Makes Jupiter So Hot?


4,518 观看 ·

How Did Earth Get Its Water?
00:03:57

How Did Earth Get Its Water?


4,042 观看 ·

Juno Arriving at Jupiter!
00:04:00

Juno Arriving at Jupiter!


1,026 观看 ·

The Extraordinary Wartime Contributions of the U.S. Coast Guard Auxiliary
00:15:21

The Extraordinary Wartime Contributions of the U.S. Coast Guard Auxiliary


4,483 观看 ·

History of America s Forgotten Mints
00:14:01

History of America s Forgotten Mints


216 观看 ·

The Extraordinary Voyage of the Polish Submarine Orzeł
00:12:37

The Extraordinary Voyage of the Polish Submarine Orzeł


3,116 观看 ·

History of the Toga and the
00:05:40

History of the Toga and the "Gens Togata"


1,428 观看 ·

Escape Attempts from
00:12:41

Escape Attempts from "The Rock" and the 1946 Battle of Alcatraz


2,181 观看 ·




Showing 635 out of 2848
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