Topic: universe

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Gravitational Waves Explained Using Stick Figures

How are gravitational waves made? In this episode of MinutePhysics, Henry Reich draws up a series of other wave creating scenarios -- water waves, air pressure waves, and radio waves -- to help explain gravitational w...

The Beautiful Relationship Between Physics and Jazz

How is physics like jazz? How is John Coltrane like Albert Einstein? Ask theoretical physicist Stephon Alexander. He sees strong connections between the improvisational nature of jazz and the pursuit of understanding ...

How Far Can We Go? Limits of Humanity – Kurzgesagt

Is there a border we will never cross? Are there places we will never be able to reach, no matter how hard we try? It turns out there are. Even with science fiction technology, we are trapped in our pocket of the univ...

ALMA, a telescope so powerful it can see into the past

There’s a telescope deep in Chile’s Atacama Desert that takes pictures so massive that it requires a supercomputer as powerful as 16 million PCs to decipher the images. This is the Atacama Large Millimeter Array (ALMA...

LIGO & The First Observation of Gravitational Waves – CalTech

On September 14, 2015 at 5:51am ET, the Laser Interferometer Gravitational-Wave Observatory (LIGO) detected ripples in the fabric of spacetime. One hundred years after Albert Einstein predicted the existence of gravit...

Explore the Science Behind Fireworks—and the Galaxy

When you watch fireworks burst with color, you're seeing examples of how stars and galaxies work: Blues from copper, yellows from sodium, bright whites from aluminum, barium greens, and reds made from strontium... The...

The Hubble Space Telescope Reflects the Cosmos

"When the Hubble Space Telescope was launched from the Space Shuttle Discovery in 1990, NASA called it the greatest advance in astronomy since Galileo. Instead, within days it became a laughing stock. Hubble had an ei...

How Many Stars Are There? – It’s Okay to Be Smart

How many stars can our eyes see on a dark night? How many stars can we see with something even more powerful than our eyes? How many stars exist?? And how are grains of sand a part of this?! Joe Hanson and PBS Digital...

The largest, sharpest image ever taken of the Andromeda Galaxy

Thanks to the NASA/ESA Hubble Space Telescope, enjoy this "fly through" of the largest and most detailed image ever taken of the Andromeda galaxy. This 4K video by YouTuber Daveachuk explores just one third of the...

Ocean Moon, Ocean World: The water beneath Europa’s icy surface

Thanks to Earth-bound telescopes and flyby data collected "about the surface, about the interior structure, and about the magnetic field around Europa" by multiple spacecrafts, scientists strongly believe that there's...

The Captured Ice Moon: Voyager 2 and Neptune’s moon Triton

As NASA looks toward the New Horizons probe's July 2015 rendezvous with dwarf planet Pluto and its five known moons, they are also reviewing Voyager 2 data collected on the 1989 flyby of Neptune's moon Triton, seen he...

How do we study the stars & measure extreme distances in space?

How can we know so much about other galaxies? What are they made of? How big are they? How far away are they from Earth? "Want to know the secrets of the universe? Just follow the light." These two TED Eds fro...

First Evidence for Water Ice Clouds Found Outside Solar System

Take a (peacefully quiet) tour through and beyond our solar system to visit a neighboring brown dwarf -- a sort of failed star that's too large to be called a planet -- called W0855. A team of scientists, led by Carne...

Solar System, Milky Way, Laniakea: Our home supercluster

Our home planet, Earth, circles the sun. The sun, our star, is but one of billions of stars in the Milky Way, our home galaxy... and beyond that? Where on the map of the cosmos is the Milky Way? For the first time, we...

Spectroscopy of Stars – Wonders of the Universe

Understand what the universe is made of by looking at the light of its stars. In this clip from Wonders of the Universe – Stardust, Professor Brian Cox demonstrates how chemical elements emit a unique set of colors wh...

Dr. Michelle Thaller: We Are Dead Stars

We are dead stars. Everything we are – the iron in our blood, every element we've ever heard of – is made from a star, a dust cloud collapsing under the force of gravity. Astronomer Dr. Michelle Thaller si...

How Do We Know How Old the Sun Is?

How Do We Know How Old the Sun Is? The Royal Observatory, Greenwich, and animation studio Beakus join together to explain how Kepler and Newton’s laws help us figure out the weight of the ...

Greek Legacy: How the Ancient Greeks shaped modern mathematics

Travel back in time to Ancient Greece where revolutionary thinkers – from Thales, Pythagoras, Democritus and Aristotle to Euclid, Archimedes, and Hypatia of Alexandria – helped define the rule...

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