Topic: light

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What is a Blood Moon? Time lapse (& real time) of a lunar eclipse

During a total lunar eclipse, the Earth's shadow falls upon on a full moon. The sun's light is blocked, turning the moon red. This is called a Blood Moon, and the next one will occur on April 4th, 2015 at 4:58am PST, ...

The science of solar eclipses: How do solar & lunar eclipses work?

How do solar & lunar eclipses work? And why don't we get eclipses every month? This Vox explainer is packed full of really interesting information about the remarkable science of solar eclipses. Find out how 5.1 d...

Four jellies that diffract rainbow light like iridescent spaceships

Monterey Bay Aquarium has a brilliant YouTube channel for viewing all sorts of beautiful and hard-to-believe creatures. A case in point: these four jellies. Above, The Lobed Comb Jelly, who looks like it's shimmering ...

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...

Solar Eclipse 2015: BBC Stargazing Live Video

From the BBC's astronomy series Stargazing Live with Professor Brian Cox and Dara O'Briain, with Liz Bonnin narrating the process, watch the March 20th solar eclipse, when the moon passes between the Earth and the sun...

Shylights: Blooming silk light sculptures at the Rijksmuseum

Made with silk, aluminum, polished stainless steel, LED's, and iPhone/iPad-controlled robotics, Shylights by Studio Drift mimic the natural world with their graceful metamorphosis. Watch as they fall 30 feet (9 meters...

Veritasium: How (and Why) Do Chameleons Change Color?

There is a misconception about chameleons... that they change their color in order to blend in with their environment. That is actually not the case... So why do chameleons change color and how are they doing it? ...

The Bubble Artist: Su Chung Tai (蘇仲太)

Su Chung Tai (蘇仲太) and his Be Fantasy Show team work to dazzle their audiences across Asia with "The Joy of Bubble". This Kuma Films video showcases his mastery of soapy air spheres as a Bubble Artist, complete wit...

Cal Academy: How to Observe a Meteor Shower

Get some blankets, find a dark hill on a dark night, make sure you've napped, and put away that smartphone. The California Academy of Sciences has some excellent tips for seeing shooting stars, more accurately known a...

What happened to the Milky Way?

What do you see in the night sky where you live? Can you see the Milky Way -- that glowing, star-filled band of light that stretches across the sky? What happened to the Milky Way? The Atlantic Video team explores...

NASA’s Solar Dynamics Observatory (SDO): Year 5

From massive solar flares, to filaments and prominences, to huge sunspots, to Venus passing by, this NASA Solar Dynamics Observatory (SDO) anniversary video is a greatest hits of the star's spectacular displays from t...

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...

Deep Look: What Gives the Morpho Butterfly Its Magnificent Blue?

What does it mean to be blue? Let's look deep into something called structural coloration, the physics of light, and how it's possible that the Morpho butterfly's wings appear to be blue, despite their containing no b...

TED Ed: What are those floaty things in your eye?

Have you ever seen something small and strangely transparent float into your field of vision? ...as if it's on your eyeball? No, you're not seeing things! And no, those are not microscopic bugs or bits of dust in ...

The sun, our closest star, in a stunning 4K time lapse animation

Compiling 17,000 images captured by the Solar Dynamics Observatory (SDO), via Helioviewer, from October 14-30, 2014, James Tyrwhitt-Drake created a stunning 4K time lapse animation. Watch 16 of our days rotate by in a...

Luxo Jr. Pencil Test: Emotional storytelling in wire frames

How do animators make a character lovable when the character doesn't have a face and doesn't speak? How can you build a relatable story with something as minimal as a computer generated pencil test? How do you communi...

Minute Physics: Why Is The Sun Yellow and The Sky Blue?

Why is the sun yellow and the sky blue? Why can we see the stars at night? Why is space black? And why is the sky more red, orange, and even pink at sunset? In this Minute Physics episode, we leap into "the grand ball...

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...

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