Topic: sun

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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...

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...

Crash Course Kids: Gotta Eat! and Feed Me: Classifying Organisms

Why do we eat and how does what we eat help classify what we are? In these first two episodes from Crash Course Kids, Sabrina explains why all living things eat. Also, try the simple energy source experiment in episod...

“Sunflower Cat Window” – Eight cats in a time lapse sunbeam

Ladies and gentlemen, boys and girls, keep a closer eye on your cats because they just may have an agenda that you haven't noticed before. This time lapse video by Mitsuru Yasui is an illuminating mini-epic that revea...

A Briefer History of Time: How tech changes us in unexpected ways

Have you ever gone camping where you wake and sleep with the sun and moon? Have you played outside all morning, only coming in when you get hungry for lunch? What was life like before we could measure time? How have c...

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...

Mars Loops the Loop: What is retrograde motion?

What is retrograde motion and why does a planet like Mars appear to change directions in the night sky? Is it playfully looping about in its orbit around the sun or is something less strange going on? From episode 2 o...

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...

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...

Why do leaves change color?

The arrival of autumn is a great reason to talk about chemistry: When tree leaves change from green to reds, oranges, yellows, and browns, we're seeing the tree's green chlorophyll fade away, revealing hidden autumnal...

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...

Fourth graders create a solar powered classroom

When Aaron Sebens started talking about renewable energy with his fourth grade class, they kept coming back to their excitement about solar power and making it a more hands-on learning experience. How might they move ...

How the Sun Sees You: Revealing human skin in ultraviolet light

Artist Thomas Leveritt set up a ultraviolet camera and viewing monitor in Brooklyn's Prospect Park to show people what their skin looks like in ultraviolet light. This is "how the sun sees you." The revealed freckles ...

Everything You Need to Know About Planet Earth

When we wake up, eat breakfast, get ready for school or work, and head out the door, we may not be thinking about how incredibly unique our small, wet rock of a planet is. But the Earth is incredibly unique. Learn som...

Summertime Science: Sunburn, Sweat, and Wrinkly Fingers

Why do we sweat? Why do our fingers wrinkle in water? Why do we get sunburns? Joe Hanson explains it all in this summer science episode of It's Okay to Be Smart. Bonus: find out what those SPF numbers mean on your sun...

Why aren’t we only using solar power?

Solar power is cleaner, more sustainable, and in many cases, less expensive than coal-fueled power plants, so why aren't we only using solar power? Beyond the business and infrastructural challenges, TED Ed outlines s...

Watch a time lapse sunset through a solar telescope

Seeing the sun set can already be a breathtaking experience, but observing the sun with a solar telescope reveals incredible details — such as sunspots and solar filaments — that we could never safely see ...

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 ...

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