Topic: sun

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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...

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 ...

Bill Nye Bikes the Distance Between Planets

Bill Nye The Science Guy bikes down a long road in wide open country to demonstrate a scale model of the solar system – a classic clip. Total distance of his ride to Pluto, back before Pluto ...

NASA’s Solar Dynamics Observatory: Year 4

Switch this video to HD full screen and marvel at the incredible detail in which we can now observe the sun, our closest star. This video is filled with year four highlights from the Solar Dy...

This is NOT timelapse: the Aurora Borealis in real time

This breathtaking video of the Aurora Borealis is not a timelapse video — this is what it looks like in real time. It was filmed in Yellowknife, Northwest Territories, Canada by astro-ph...

New World by Oliver Sin

New World, a short animation about all kinds of creations, by Oliver Sin. Watch more animation, including Five More Minutes, The Solar System - Our Home in Space, World of Motion, and Ode t...

Jewel Box Sun

From NASA Goddard, Jewel Box Sun, a surprising video that illuminates how NASA’s Solar Dynamics Observatory (SDO) converts a wide range of invisible wavelengths into colorized images tha...

Minute Physics: Why The Full Moon is Better in Winter

Minute Physics on Why The Full Moon is Better in Winter. Bonus: great visualizations explaining Earth’s relationship to our sun and moon throughout the year. via jtotheizzoe.

A space-time warping demo for the classroom

Physics Teacher SOS workshop leader Dan Burns demonstrates how he uses stretched spandex lycra, weights, marbles, and gravity in his high school classes to make this impressive space-time wa...

What would the moon look like if it was as close as the ISS?

What would the moon look like if it was at the same distance from Earth as the International Space Station? (That’s 240-ish miles above our planet instead of its usual 238,900 miles awa...

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