Topic: stars

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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...

Van Gogh’s Starry Night painted on dark water

From ebru marbling artist Garip Ay in Istanbul, Turkey, this is Van Gogh on Dark Water, two floating paintings of Vincent Van Gogh masterpieces: The Starry Night and a self-portrait from 1889. From Ay via ABC News: ...

The Blind Astronomer of Nova Scotia

Tim Doucette is legally blind, yet he sees the stars better than most people. A childhood diagnosis of congenital cataracts forced doctors to remove Doucette's lenses and widen his pupils. That left the amateur astron...

Understanding the Magnetic Sun – NASA Goddard

This dynamic computer model of our sun reveals the behavior of its invisible magnetic structure. The pink and green indicate open magnetic field lines that reach out into space, while the "closed" white lines loop bac...

How do we know what stars are made of?

How do astronomers know what stars are made of when those stars are light years away from Earth? These demonstrations by Dr Francisco Diego reveal the colors of light that are produced from sodium chloride, rubidium c...

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...

Spine of the South, time lapse from Ecuador to Patagonia

Travel the longest mountain range in the world, The Andes, via this time lapse compilation video by photographer Eric Hanson. Taking several hundred thousand photos during his seven month trip along South America's An...

The GPS-navigated rolling of the dung beetle

From all across the galaxy, the light of billions of stars finds its way to Earth, passes through our atmosphere, and enters the eyes of a small South African beetle rolling a ball of dung. The beetle’s eyes are not s...

What Does Earth Look Like From Space? An Astronaut’s Perspective

What does Earth look like from space? Perhaps it's easy to take that view for granted if you've watched enough videos... but just imagine for a moment that you are watching it from a small window in a house-sized vehi...

DISHDANCE, a time lapse for The Skyglow Project

Created for The Skyglow Project, an astrophotography book and time lapse series by Gavin Heffernan and Harun Mehmedinovic, DISHDANCE observes massive radio telescopes during the day and night. The project also capture...

What is a constellation? – Crash Course Kids

A constellation is a cluster of stars that create an imaginary shape... a celestial connect-the-dots. In a sky full of millions of stars, these connections between the brightest objects helps astronomers, storytellers...

Fold & Cut Theorem – Cut any shape from only one cut

Can you cut a square from the center of a piece of paper with just one straight cut? Spoiler: YES, you can. In this Numberphile video, Manchester-based mathematician Dr. Katie Steckles demonstrates an idea that dates ...

How To Decorate Galaxy Cookies – SweetAmbs

Celebrate space exploration with baked goods! In this SweetAmbsCookies video, cookie decorating artist Amber Spiegel demonstrates how to decorate galaxy cookies using royal icing, a mix of confectioners sugar, water, ...

Beautiful summer nights full of fireflies and stars

Of his magical-looking evenings observing the stars, the lightning, and the glowing summer insects of Ithaca, New York, Michael Roman writes: I confess, I spent many--perhaps too many--nights this summer standing a...

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...

Sunlight is way older than you think – TED Ed

The random walk problem -- the "mathematical formalization of a path that consists of a succession of random steps" -- can be applied to sunlight... not the sunlight that travels from the sun to Earth, which takes onl...

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 Big Is The Sun? – MinutePhysics

Even though the sun and the moon look around the same size in the sky, the sun is 400 times bigger than our planet's moon and is 400 times farther away. Compare the sun's 150,000,000 km (93,205,679-ish miles) distance...

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