Crash Course
White Dwarfs & Planetary Nebulae
Today Phil follows up last week’s look at the death of low mass stars with what comes next: a white dwarf. White dwarfs are incredibly hot and dense objects roughly the size of Earth. They also can form planetary nebulae: huge,...
SciShow
3 New Discoveries in Space
Hank shares three cool discoveries in space science, including a celestial crucible of phosphorous, noble gases found in a supernova, and plumes of water vapor on Europa.
SciShow
How Stars Freeze
When you think of a frozen object in space, you might think of Pluto, but stars themselves actually freeze.
SciShow
How to Kill a Galaxy
Our Milky Way galaxy is alive and well, producing new stars all the time. But there’s another group of galaxies out there, populated only by venerable red dwarf stars - the young stars are nowhere to be seen. In effect, these galaxies...
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...
Crash Course
Exploring the Universe Crash Course Big History 2
In which John Green, Hank Green, and Emily Graslie teach you about what happened in the Universe after the big bang. They'll teach you about cosmic background radiation, how a bunch of hydrogen and helium turned into stars, formed...
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...
TED Talks
TED: The search for the invisible matter that shapes the universe | Chanda Prescod-Weinstein
The universe that we know, with its luminous stars and orbiting planets, is largely made up of elements we can't actually see -- like dark energy and dark matter -- and therefore don't fully understand. Theoretical physicist Chanda...
SciShow
4 Tiny Missions Answering the Biggest Questions in Astrophysics
The Astrophysics Pioneers program is funding four innovative new missions that read like a best-hits album of the most exciting astronomical frontiers: from galaxy evolution and exoplanets, to neutron star mergers and astroparticle physics.
SciShow
Why Astronomy Hasn't Really Changed Since the 1900s
The way modern researchers study the sky hasn’t really changed in the last few centuries. For the most part, astronomers still study things by analyzing their light.
PBS
What Do Stars Sound Like?
We can now map the interiors of stars by "listening" to their harmonies as they vibrate with seismic waves.
Crash Course
The Silent Era: Crash Course Film History
The Silent Era of Hollywood set a lot of things into motion in terms of how movies were made and sold. Big stars were one of the main ways studios tried to make their movies stand apart from one another and get the public to make choices...
MinutePhysics
Why Doesn't Time Flow Backwards? (Big Picture Ep. 1/5)
Thanks to Google Making and Science for supporting this series, and to Sean Carroll for collaborating on it! AMAZING Interactive Entropy explainer by Aatish Bhatia: http://aatishb.github.io/entropy/ This video is about why entropy gives...
PBS
How Much Information is in the Universe?
Billions of galaxies, each with billions of stars, each with .... rather a lot of particles in them. And then there's dark matter, black holes, planets, and the particles and radiation in between the stars and galaxies. But.... is the...
PBS
How Will the Universe End?
We live in an unusual age - the age when the stars still shine. We should count ourselves lucky - nearly all of future history will be dark. But events will still unfold in that long, cooling darkness, and civilizations may endure. So...
SciShow
Were the Planets Always in the Same Order?
Four rocky inner planets and four gaseous outer planets - makes sense, right? But when astronomers turned their eyes to planets beyond our star system they found out that many systems are set up differently. Why?
SciShow
There Might be a New Kind of Habitable Planet!
Extreme environments full of life on Earth have led researchers to expand the definition of habitability to something that includes many more planets, potentially leading us to evidence of living things in a dramatically shorter time!...
SciShow
3 Ways to Slingshot a Star
The star-mapping satellite Gaia has found more than 20 stars speeding across the Milky Way toward intergalactic space. There are just a few things that can slingshot a star out of a galaxy and all of them take some extreme gravitational...
TED Talks
Chris Anderson (TED): Questions no one knows the answers to
TED curator Chris Anderson shares his obsession with questions that no one (yet) knows the answers to. A short intro leads into two questions: Why can't we see evidence of alien life? And how many universes are there?
TED-Ed
TED-ED: How cosmic rays help us understand the universe - Veronica Bindi
We only know 4% of what the universe is made up of. Can we also know what lies beyond our galaxy ... and if there are undiscovered forms of matter? Luckily, we have space messengers - cosmic rays - that bring us physical data from parts...
TED Talks
Michelle Borkin: Can astronomers help doctors?
How do you measure a nebula? With a brain scan. In this talk, TED Fellow Michelle Borkin shows why collaboration between doctors and astronomers can lead to surprising discoveries.
SciShow
How Two Dead Stars Sparked a New Field of Astronomy
Pulsars are more than just cool blinking lights shining across the universe. The discovery of the first binary pulsar paved the way for gravitational wave astronomy astronomy today.