SciShow
The Ghostly Particles That May Have Unbalanced the Universe
Almost all matter in the universe should have been annihilated shortly after the Big Bang, but looking around, we see galaxies, stars, planets, and, you know... us. So obviously that didn't happen, and the why of it may have something to...
SciShow
Why Do People Say We've Reached the End of Physics?
Our fundamental picture of the universe seems pretty nearly complete these days, to the point that some people are suggesting that we’ve arrived at some version of “the end of physics.” And sure, physics is at a turning point, but it...
TED Talks
Kevin Kelly: Technology's epic story
In this wide-ranging, thought-provoking talk, Kevin Kelly muses on what technology means in our lives -- from its impact at the personal level to its place in the cosmos.
SciShow
Space Superlatives of 2020!
2020 wasn't ALL bad news. This year scientists found ludicrously fast stars, ancient galaxy clusters, and developed a camera that could change how we study the night sky.
SciShow
How Much of Me Is "Star Stuff?"
Carl Sagan famously observed that we are all made of "star stuff." But what does that mean? And how much of you is really made of dead stars? SciShow Space explains!
TED Talks
Martin Rees: Is this our final century?
Speaking as both an astronomer and "a concerned member of the human race," Sir Martin Rees examines our planet and its future from a cosmic perspective. He urges action to prevent dark consequences from our scientific and technological...
SciShow
Forecasting the Weather...on the Sun
The sun is beginning a new weather cycle, causing debate among scientists about how intense things are going to get, and elsewhere, scientists are looking into just how fluid our early universe was.
SciShow
How Do We Know the Age of the Universe?
What kinds of tools do astronomers use to calculate the age of the universe, and how can they determine the speed of its expansion?
TED Talks
David Christian: The history of our world in 18 minutes
Backed by stunning illustrations, David Christian narrates a complete history of the universe, from the Big Bang to the Internet, in a riveting 18 minutes. This is "Big History": an enlightening, wide-angle look at complexity, life and...
Crash Course
Dark Energy, Cosmology part 2
The majority of the universe is made up of a currently mysterious entity that pervades space: dark energy. We don’t know exactly what it is, but we do know that dark energy accelerates the expansion of space. We think this means the...
SciShow
How Scientists Found the First Type of Molecule in the Universe - SciShow News
Around a quarter of a million years after the Big Bang, the very first molecule, helium hydride was formed. Now scientists have confirmed that molecule is still being made, and they found it with some help from a high flying airplane.
SciShow
Enceladus's Super-Thin Ice
You might not want to sign up for the Enceladus Ice Hockey League... And some researchers have an idea that might make the Big Bang model more accurate!
TED Talks
TED: every piece of art you've ever wanted to see -- up close and searchable | Amit Sood
What does a cultural Big Bang look like? For Amit Sood, director of Google's Cultural Institute and Art Project, it's an online platform where anyone can explore the world's greatest collections of art and artifacts in vivid, lifelike...
SciShow
The Simple Molecule Behind Our Complex Universe
All the complexity in the universe ultimately owes its existence to one of the simplest materials possible: molecular hydrogen. And not only did this molecule play a huge role in building the universe as we know it, today, it also helps...
Crash Course
Astrophysics and Cosmology: Crash Course Physics
It's time for the end. At least the end of our first series on Physics here at Crash Course. In this episode of Crash Course Physics, Shini sits down to talk about Astrophysics and Cosmology. By using what we've learned this year, we can...
PBS
How Cosmic Inflation Flattened the Universe
Although much of the Big Bang Theory is widely accepted to be true, it only gets us part of the way there. Observable truths such as the CMB and the flatness of our universe reveal that there is no way the universe has been expanding at...
SciShow
Dark Energy
The universe is huge and getting bigger all the time, and we have we have dark energy - the most mysterious force in the universe - to blame/thank for it. Thought to make up more than 70% of the energy in the whole universe, Hank...
PBS
Are You a Boltzmann Brain?
Was an incredible drop in entropy responsible for the Big Bang? If that's the case, this would lead us to conclude that a great many other things are possible, including the likelihood that you are a Boltzmann Brain.
PBS
Why the Big Bang Definitely Happened
We pretty much know for sure that the universe was once extremely small, and extremely hot. And we know that something set it in motion, expanding rapidly and continuing to do-so today. But the actual moment of 'the Big Bang' is still a...
SciShow
The First Few Moments That Physics Can't Explain
Although science has provided astounding insights into the origins of the universe, we're still not quite sure what happened in those very first few moments.
SciShow
How Can the Universe Be Flat?
Can geometry predict the future? Cosmologists think the overall curvature of universe can tell us secrets about how it will eventually end.
TED-Ed
TED-Ed: The beginning of the universe, for beginners - Tom Whyntie
How did the universe begin -- and how is it expanding? CERN physicist Tom Whyntie shows how cosmologists and particle physicists explore these questions by replicating the heat, energy, and activity of the first few seconds of our...
SciShow
We Still Can't Find the First Stars in the Universe | SciShow News
Astronomers looking farther back in time than ever before are giving us a better idea of what the early universe must have been like, and we've identified another of the mysterious ultraluminous X-ray pulsars.