PBS
The Crisis in Cosmology
The search for a single number: the hubble constant, which is the rate of expansion of our universe, has consumed astronomers for generations. Finally, two powerful and independent methods have refined its measurement to unprecedented...
PBS
Is Quantum Tunneling Faster than Light? | Space Time | PBS Digital Studios
Where are you right now? Until you interact with another particle you could be any number of places within a wave of probabilities. This is only one way that quantum mechanics challenges our perception of reality. Matt dives into these...
PBS
Sound Waves from the Beginning of Time
Invisible to the naked eye, our night sky is scattered with the 100s of billions of galaxies the fill the known universe. Like the stars, these galaxies form constellations – hidden patterns that echo the reverberations of matter and...
PBS
Are Cosmic Strings Cracks in the Universe?
Reality has cracks in it. Universe-spanning filaments of ancient Big Bang energy, formed from topological defects in the quantum fields, aka cosmic strings. They have subatomic thickness but prodigious mass and they lash through space at...
Be Smart
4 Ways the Universe Might End (All of Them Are Bad)
I don’t want to alarm you, but the world is going to end. All of this. Gone. And scientists are certain all of this will happen. On the bright side this isn’t going to happen for 4-5 billion years. It makes me wonder: In a universe...
PBS
Perpetual Motion From Negative Mass?
Challenge question: if 1kg of apples is $5 and 2kg is $10, how much is -1kg of apples? The answer? Priceless. Because you could use negative-mass apples to build warp drives, travel in time, and construct a perpetual motion machine. In...
PBS
New Fundamental Particle Discovered?? + Challenge Winners!
Scientists at the Large Hadron Collider may have just discovered a new fundamental particle that could change the way we look at the universe. Is this Dark Energy? A giant Neutrino? The big brother of the Higgs Boson? Or could it be the...
PBS
Space DOES NOT Expand Everywhere
Space is big, and it’s getting bigger. But where does all that new space actually come from? And is it popping into existence all around you right now? Is that why the remote control is always further away than I thought?
PBS
Is Doctor Who a Religion?
Dr. Who is one of the longest running TV shows on the BBC, and it's got a huge fandom surrounding it, called Whovians. And while it might not seem like, Whovianism, might just be religion! Whovians, like other passionate fan cultures,...
SciShow
Cosmic Shear: Revealing the Invisible Universe
What exactly are the invisible things out there, and how did they help form the universe as we know it? To explore and understand the most spectacular structures out there, scientists have been using cosmic shear to indirectly detect...
SciShow
The End of Everything
Hank gives us an inclusive overview of how everything in the universe is thought to have begun, and how cosmologists predict it will all come to an end. Now get happy!
TED-Ed
TED-Ed: How to detect a supernova - Samantha Kuula
Just now, somewhere in the universe, a star exploded. In fact, a supernova occurs every second or so in the observable universe. Yet, we’ve never actually been able to watch a supernova in its first violent moments. Is early detection...
SciShow
How Slime Mold Is Tackling Mysteries of Cosmology - SciShow News
We might be able to use slime molds to help predict the shape of matter in the universe, and the Rosetta mission may have figured out why many comets seem to be missing a bunch of nitrogen.
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...
TED-Ed
TED-Ed: How far would you have to go to escape gravity? - Rene Laufer
Every star, black hole, human being, smartphone and atom are all constantly pulling on each other due to one force: gravity. So why don’t we feel pulled in billions of different directions? And is there anywhere in the universe where...
SciShow
Quantum Fishing for the Higgs Boson
Hank talks to some VIPs from CERN about the question on everyone's mind: does the Higgs Boson particle exist? And describes how CERN is going about finding the answer. Hank interviewed Sergio Bertolucci on October 11, 2011 and Rolf Heuer...
Curated Video
Cosmology
The study of the Universe as a whole, rather than specific stars or celestial bodies. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
Curated Video
Factpack: Big Bang Scientists
How did previous generations of scientists think of the Universe, and how has that understanding changed over time? Physics - Universe - Learning Points. A Twig FactPack Film. Open a discussion on what has been already learnt in a topic,...
Curated Video
Degrees of Separation: Erdős
Paul Erdős is the most published mathematician ever. To such an extent that now everyone in the world has an assigned 'Erdős number', showing the degrees of separation between their work and his! Maths - History Of Maths A Twig Math...
Curated Video
Exploring the Cosmos: The Virtual Galaxy and Beyond
Join Professor Carlos Frank and his team from Durham University's Institute of Computational Cosmology on a mind-blowing journey through the cosmos with Cosmic Cookery. Using cutting-edge computer simulations, they have recreated a...
One Minute History
177 - The Hubble Space Telescope - One Minute History
The Hubble Space Telescope, launched on April 24, 1990 by the Space Shuttle Discovery, has revolutionized astronomy and captured the imagination of people around the world. Hubble's launch quickly turned into disappointment when it was...
Curated Video
Swept Under the Cosmological Rug
Princeton University physicist Paul Steinhardt relates how many top cosmologists simply ignore the problems with cosmic inflation.
Curated Video
Seduced by Inflation
Princeton cosmologist Paul Steinhardt recalls his initial enchantment with cosmic inflation when he first heard Alan Guth suggest it in a talk in 1982.
Curated Video
Learning Together
Theoretical physicist Rocky Kolb, University of Chicago, describes the uniquely enriching experience he had of learning astronomy side by side with his graduate school advisor and mentor.