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Private Notes
Hidden behind all its serene beauty, the universe is a place of lurking peril, full of powers so immense they defy our comprehension. Take a look at the universe's dark side, a cosmos of impending menace. From earthquakes to hurricanes to massive asteroid impacts and exploding stars, explore its explosive powers and uncover the destructive forces that could be unleashed at any moment.
In the known universe, size matters. From the enormity of the galaxy, to the tiny atoms that are the building blocks of everything, the universe is a place of extreme sizes. From the unimaginably big to the incomprehensibly small, explore size in the universe and exactly what it means to us and our understanding of the cosmos.
In the cosmos’ vast expanse, nothing matters more than speed. Whether venturing out to the farthest reaches of the solar system or exploring the mysteries of space and time, speed is the key. From the merely quick to the unimaginably fast, explore speed and find out how tremendous velocities reveal a universe stranger and more exotic than ever imagined.
In the vast expanse of space, nothing matters more than speed. Whether we’re venturing out to the farthest reaches of our solar system or exploring the mysteries of time travel and wormholes, speed is the key.
From the enormous universe in which we exist to tiny atoms that make up the building blocks of everything around us, size matters when it comes to understanding the cosmos.
Scientists believe that our universe started with a colossal explosion called the Big Bang. That powerful blast created all the matter and energy in the universe and laid the groundwork for every explosion since.
The collisions that created Earth and the moon; the people who work to stave off the apocalypse; violent impacts deep in the cosmos.
Earth's weather is compared to that of other planets; cataclysmic space weather that could cripple life on Earth.
Are we alone? It's an age-old question that was relatively "taboo" in mainstream science until the mid-1990s, when astronomers found planets outside our solar system. Now, Known Universe joins the hunt for alien life as scientists search for planets with similar characteristics to Earth's. We'll take you on a journey to find planets that may support life and show you new space-based technologies that aid in the search for advanced alien civilizations.
Our ancestors' relationship with the heavens led to some of mankind's ancient discoveries and greatest creations. The ancient Greeks discovered Earth was round; the Polynesians used the sun and stars to navigate vast oceans in simple canoes; some think amazing structures like Stonehenge were designed to observe the sky. Now, Known Universe examines mankind's first observations of the cosmos to understand how they put us on the path to modern discovery. An alternate name of the episode: Star Gates
More than 70 percent of Earth is covered in water, but we've only explored roughly 5 percent of it. We've roamed even less of our solar system. Now, armed with some of the latest advances in technology, we join scientists on a voyage into the unknown - from the far reaches of space to the extreme depths of our oceans - where new discoveries have experts questioning everything we know about the universe, and ultimately ourselves. An alternate name of the episode: To the Extremes
Earthquakes and volcanoes pose an unpredictable and deadly threat here on Earth, but they also occur far out in the universe. What can we learn from these interplanetary phenomena that may help us predict when Mother Nature will next unleash her fury? Scientists are looking to Io, a moon of Jupiter that is jam-packed with volcanoes, for insights. Then we'll travel deep under the Earth's crust to see the physical source of these catastrophic events. An alternate name of the episode: Time Bombs
The human body thrives on the welcome confines of Earth, but in space, survival becomes a tense, daily challenge. Micro-gravity's effects on daily human activity, from eating to sleep to sex, are just beginning to be understood. But these are only the start of our problems well also explore how the vacuum of space and its near-zero pressure can kill us within minutes, if not seconds. And the ultimate space executioner may be the ever-present dangers of solar radiation. How will we overcome the odds and survive space.
Join a treasure hunt of cosmic proportions, with a diamond mine on Neptune?! Known Universe explores innovative ideas that could allow humans to harness raw materials in space. One concept includes using Kevlar ribbons to anchor astronauts to asteroids containing more metal than has been excavated in all of human history. And see how meteorites have created huge deposits of gold and other precious metals here on Earth.
This episode of Known Universe explores how a star becomes even more powerful in its violent supernova death, and how the most intense place in the universe may not be a star at all... but a black hole. We'll also delve into how these powerful stars affect the planets around them, from the utter devastation of their enormous amounts of energy, to the possibility of creating the ideal environment for life.
Humans have come to recognize Earth as an environment where we are in control. Were continually creating technologies that get bigger, faster, and make us more interconnected. In this episode of KNOWN UNIVERSE we'll explore how science is re-thinking the physics of the universe to take everything from basic household items and vehicles to our most advanced technologies here on Earth and transform them for use in space.
Volcanic eruptions aren't unique to Earth they are common throughout the solar system. Eruptions are capable of both destruction and creation, and we'll see their astonishing effects on humans and entire galaxies. We'll head to the big island of Hawaii to get up close and personal with one of the most active lava fields on the planet. Is there a way to predict when the next catastrophic eruption might occur?
Engineering in space represents the future of human civilization, but also poses some of our greatest technical difficulties. We'll travel to NASA's tool lab and see the equipment we need to build in this challenging environment, from high tech wrenches and hammers to the ultimate robotic handyman, Robonaut.
We've landed on the moon, and launched probes to study planets hundreds of millions of miles away. But when it comes to space travel, were just babes in the woods. Of the hundreds of launches we've made into space, only a handful have even left Earths gravity. So whats the problem? Well, for one, its a huge challenge just getting off the planet. If you want to get into space you have to fly fast and high. Find out just how tough and complicated future space travel can be.
The world didn't end on 5/21/11 as some feared, but someday it will, and not just on Earth, but for asteroids, comets, moons, planets, stars and everything in our Known Universe. To demonstrate this complex cycle of life and death, scientist David Kaplan watches the destruction of a 16-story building shattering the structure while creating new matter and debris. We'll also see how a wildfire compares to the ignition of a supernova deep in space, and step inside a black hole simulator.
