SciShow Kids
Why Do Things Float in Space? | How We Study Space | SciShow Kids
Living in space is pretty different from living on Earth, and not just because people can float around! Today, Jessi and Sam the Bat learn about the weird ways things like fire and water behave when they are in space.
TED Talks
TED: Gourmet food for the final frontier | Phnam Bagley
What does an in-flight meal look like when you're traveling to Mars? Designer Phnam Bagley envisions a future where astronauts have nourishing, flavorful food reminiscent of home -- a giant leap from their current staple of...
PBS
Why String Theory is Right
Some see string theory as the one great hope for a theory of everything - that it will unite quantum mechanics and gravity and so unify all of physics into one glorious theory.
PBS
What Survives Inside A Black Hole?
Black holes are the result of absolute gravitational collapse of a massive body: a point of hypothetical infinite density surrounded by an event horizon. At that horizon time is frozen and the fabric of space itself cascades inwards at...
Bozeman Science
PS3C - Relationship Between Energy and Forces
In this video Paul Andersen describes the relationship between energy and forces. When objects are directly touching electromagnetic forces can result in forces and energy exchange. When objects are not directly touching fields;...
PBS
Quantum Gravity and the Hardest Problem in Physics
Between them, general relativity and quantum mechanics seem to describe all of observable reality.
SciShow
The Physics of Roller Coasters
Roller coasters give people the opportunity to experience physics in dramatic ways. In this episode of SciShow, we break down how physics work on roller coasters to give you the ride of your life!
TED-Ed
TED-Ed: Newton's three-body problem explained | Fabio Pacucci
In 2009, researchers ran a simple experiment. They took everything we know about our solar system and calculated where every planet would be up to 5 billion years in the future. They ran over 2,000 simulations, and the astonishing...
MinutePhysics
How to Tell Matter From Antimatter | CP Violation & The Ozma Problem
This video was made with the support of the Heising Simons Foundation. This video is about the Ozma problem of distinguishing the chirality (ie left-handedness or right-handedness) of matter using weak interaction processes like beta...
TED-Ed
TED-Ed: Do larger animals take longer to pee? | David L. Hu
A cat's bladder can only store a golf ball's worth of urine. For humans, it's a coffee mug and for elephants, a kitchen trash can. An elephant's bladder is 400 times the size of a cat's, but it doesn't take an elephant 400 times longer...
SciShow
The Quest for Glueballs
The quantum world is weird. Today we're looking at a strange particle called a glueball that contains no matter...they're made of pure force!
MinutePhysics
What if the Earth Were Hollow
What if there were a tunnel through the middle of the earth and you jumped in?
SciShow
5 Times Evolution Should Have Planned Ahead
Natural selection can lead to some pretty amazing adaptations, but sometimes the resulting traits aren’t the most efficient solutions to the problems at hand. With the bar set to “good enough,” here are some features that arose from...
SciShow
4 of Physics’ (Other) Greatest Mysteries
Physicists are interested in the big questions like "Where did we come from?" and "What is all this stuff?". But the answers to some of these questions, just lead to more questions.
Be Smart
Theory vs Hypothesis vs Law
Some people try to attack things like evolution by natural selection and man-made climate change by saying "Oh, that's just a THEORY!" Yes, they are both theories. Stop saying it like it's a bad thing! It's time we learn the difference...
SciShow
How Stars Freeze
When you think of a frozen object in space, you might think of Pluto, but stars themselves actually freeze.
SciShow
5 Things You Were Taught Wrong in Elementary School | Compilation
When you’re learning about science for the first time, it can be easier to break things down into a simpler form, and you can end up with a few misconceptions about the world. But sometimes this is the first step to understanding that...
TED-Ed
TED-Ed: Three ways the universe could end - Venus Keus
Our universe started with the Big Bang, but how will it end? Explore cosmologists’ three possible scenarios: the Big Crunch, the Big Freeze and the Big Rip. -- We know about our universe’s past: the Big Bang theory predicts that all...
SciShow
5 Baffling Mysteries About the Universe
At the beginning of the 20th century, many scientists thought that we had learned all there was to know about physics. The problem is, the better we get at measuring things and building models of our universe, the more we discover that...
MinutePhysics
Do Photons Cast Shadows?
This video is about two-photon (gamma-gamma) physics, and how photons can interact with each other - either mediated by a passing lepton, or gravitationally via lensing, or via vacuum fluctuation pair production of vertical particles...
SciShow
The Surprisingly Retro Future of Batteries
Renewable energy may be the way of the future, but in order to store that energy to make our grids more sustainable, we might need to take a look back at some battery technologies of the past.
SciShow
What If the Universe Isn't Uniform?
According to the cosmological principle, the universe is more or less the same in all directions. But what happens when we put this to the test?