SciShow
The Most Sophisticated Mirror in the Universe
Hank summarizes the five reasons why infrared telescopes were supposed to be impossible to build, and then describes how a team of scientists and engineers overcame those obstacles to build the James Webb Space Telescope.
PBS
Cosmic Microwave Background Explained
HAS SPACE ALWAYS BEEN BLACK? As long as we've been around, YES. But the universe gets much more exciting, AND much BRIGHTER, as we start winding our clocks back to the early days of the universe. Near the beginning of the universe, when...
MinutePhysics
Why the Solar System Can Exist
If gravity is so attractive, why doesn't the earth just crash into the sun? Or the moon into the earth? The answer: Stable Orbits
TED-Ed
TED-Ed: Is math discovered or invented? - Jeff Dekofsky
Would mathematics exist if people didn't? Did we create mathematical concepts to help us understand the world around us, or is math the native language of the universe itself? Jeff Dekofsky traces some famous arguments in this ancient...
SciShow
Where Did the Big Bang Happen?
The name “The Big Bang” makes it sound like there was a big explosion in one particular spot, but if that’s the case, where did it happen?
MinutePhysics
Relativistic Addition of Velocity | Special Relativity Ch. 6
This video is chapter 6 in my series on special relativity, and it covers the topic of relativistic addition of velocity: aka, how things that are moving relative to one inertial reference frame, which is moving relative to another...
PBS
The Andromeda-Milky Way Collision
The Andromeda galaxy is heading straight toward our own Milky Way. The two galaxies will inevitably collide. Will that be the very last night sky our solar system witnesses?
MinutePhysics
Why is it Dark at Night
Have you ever wondered why you look up and see a dark sky at night?
Bozeman Science
Spacetime
In this video Paul Andersen explains how the dimensions of space and time are combined in relativistic mechanics. Gravity and velocity can affect both space and time according to Albert Einstein's Special Law of Relativity.
SciShow
We Found Two Planets Using Artificial Intelligence!
Artificial Intelligence has helped astronomers discover 2 new planets in systems that we'd already looked at, and new theories about how Mars lost some of its water have surfaced.
SciShow
The Hunt for the First Neutrinos in the Universe - Cosmic Neutrino Background
The Cosmic Microwave Background shows us the oldest light in the universe, but to really understand the early universe we need something even older: The Cosmic Neutrino Background.
SciShow
How Do We Know What the Milky Way Looks Like?
How do we know what the Milky Way looks like if we've never been outside of it?
TED Talks
Marcus du Sautoy: Symmetry, reality's riddle
The world turns on symmetry -- from the spin of subatomic particles to the dizzying beauty of an arabesque. But there's more to it than meets the eye. Here, Oxford mathematician Marcus du Sautoy offers a glimpse of the invisible numbers...
PBS
How Do You Measure the Size of the Universe?
The universe is HUGE. But, there is only so much of the universe we can ACTUALLY see, and if we wanted to measure that FINITE space, how would we do it? A gigantic ruler? One really long car ride? Or maybe it's something even more...
PBS
The Star at the End of Time
If we, or any conscious being is around to witness the very distant future our galaxy, what will they see? How long will life persist as the stars begin to die?
SciShow
3 of the Universe’s Most Extreme Galaxies
With so many galaxies in the universe, some are bound to astound us. Here are three of the most extreme galaxies scientists have discovered so far.
SciShow
Helium
Hank talks about everyone's favorite squeaky-voice gas and why it's important for more than party balloons.
Be Smart
What's The Hottest Hot and Coldest Cold?
The hottest and coldest temperatures in our universe are rarely witnessed, but in these rare spots, our understanding of physics is challenged. Weird things happen at extreme hot and absolute cold.
TED-Ed
TED-Ed: Where did Earth's water come from? - Zachary Metz
Water covers over 70% of the Earth, cycling from the oceans and rivers to the clouds and back again. It even makes up about 60% of our bodies. But in the rest of the solar system, liquid water is almost impossible to find. So how did our...
SciShow
3 Galaxies That Shouldn't Exist
The universe is a big place full of galaxies that we've only begun to study. SciShow Space presents 3 of the strangest ones we've found so far.
SciShow
Is There Gravity in Space
In a word, "yes" - space is packed with gravity. Hank explains how Isaac Newton described how gravity works, and why even though it seems that things are floating in space, they're still effected by gravity. Every object in the universe...
MinutePhysics
Where Do Galaxies Come From?
Thanks to the Space Telescope Science Institute (STScI) and NASA's James Webb Space Telescope for supporting this video! In particular, thanks to Dan Coe of STScI for taking the time to chat with me about what we do and don't know about...
SciShow
How Quarks Fixed the Mess That Was Particle Physics
Particle physics isn't simple, but it was much more confusing before physicists knew about quarks.
TED-Ed
TED-ED: Light seconds, light years, light centuries: How to measure extreme distances - Yuan-Sen Ting
When we look at the sky, we have a flat, two-dimensional view. So how do astronomers figure the distances of stars and galaxies from Earth? Yuan-Sen Ting shows us how trigonometric parallaxes, standard candles and more help us determine...