Video Description
What is time? A deceptively simple question, yet it is the key to understanding relativity. It is sort of the reason my hair is going gray. [laughter] When we describe motion, we do so as a function of time, 10 meters per second, 100 miles per hour. But the mathematical description of velocity is moot …
Time Is But a Stubborn Illusion – Sneak Peek | Genius 더 보기 »
– [Narrator] Glaciers have been shaping our world for millions of years. But as climate change warms the planet, glaciers are disappearing, not only altering the landscapes they leave behind, but changing our oceans, weather, and life on earth as we know it. A glacier is a huge mass of ice that moves slowly over …
[bees buzzing] NEIL DEGRASSE TYSON: For thousands of years, bees have been symbols of mindless industry. We always think of them as being something like biological robots, doomed to live out their lives in lockstep, shackled to the dreary roles assigned to them by nature. This is our first contact story. It happened in a …
The Search for Intelligent Life on Earth | Cosmos: Possible Worlds 더 보기 »
Easter islands moai now multi tons statues some measuring more than 20 Terry Hunt Archaeologist meters in length and weighing more than 75 tons were carved out of the islands quarry of volcanic tuff and then transported some of them several miles over the islands rugged terrain these statues were then placed on impressive platforms …
Walking with Giants: How the Easter Island Moai Moved | Nat Geo Live 더 보기 »
– [Narrator] The ground begins to tremble. – [Announcer] Three. – [Narrator] Massive engines roar to life. – [Announcer] Two. – [Narrator] Billowing clouds of exhaust. – [Announcer] One. – [Narrator] And then a blinding pillar of fire. – [Announcer] Liftoff. We have a liftoff. – [Narrator] A mighty voyager leaves the Earth behind to …
(gentle music) – [Narrator] Like buried treasure, they lie hidden from sight. Echoes of an ancient past, they whisper secrets and tell tales once lost to time. What are fossils Fossils are remnants or impressions of ancient organisms that are naturally preserved in stone. While there are hundreds of fossil types, they are often grouped …
(gentle music) – [Narrator] Coral reefs, their bright, vivid colors can be seen in tropical ocean waters around the globe. Beyond their brilliant appearance lies a hidden significance. What are corals Coral are animals. Though they may look like colorful plants, coral are, in fact, made up of tiny animals called polyps. These invertebrates can …
snow leopards are one of the world’s most elusive cats nicknamed ghosts of the mountains they live in the world’s highest ranges and are one of the least understood felines snow leopards inhabit the highest altitude documented of any cat their habitat includes the highest mountain ranges across central asia with altitudes up to 20 …
if there’s one animal that lives up to the saying you are what you eat it’s probably the giant panda nearly every aspect of a panda’s life revolves around bamboo [Music] giant pandas eat and eat and eat pandas can spend more than half of each day eating to understand why pandas eat so much …
While billions of stars are scattered throughout the universe the one at the center of our solar system Plays a special role for us here on earth our Sun formed about 4.5 billion years ago in the Milky Way galaxy’s Orion’s fur It was born when a cloud of dust and gas known as a …
Sun 101 | National Geographic National Geographic 21.9M subscribers 더 보기 »
