Explorables.io: free interactive tools for the curious

Explore.

Pick a doorway. Each one opens into its own world.

Showing all 9 explorables.

Animals & nature
Inside an Eagle Egg

Dive into a bald eagle egg in 3D and watch 35 days of growth, from a disc on the yolk to hatching, with real nest-camera footage.

By Dr. Christian Sasse
Animals & nature In progress
The Bald Eagle

Rotate an eagle and peel back the layers: skeleton, muscles and nervous system. See how a raptor is built for flight.

By Dr. Christian Sasse
Astronomy
The Cloud That Seeds Itself

A 1,800 km cloud on Mars that may make ice out of nothing. A three-minute film for complete beginners.

By Dr. Christian Sasse
Astronomy
Spinning Neutron Star

A star the size of a city, heavier than the Sun, spinning 716 times a second. Watch real physics bend its light.

By Dr. Christian Sasse
Astronomy
Thirty-Two Clocks

A music video about satellites, clocks and general relativity: why time runs faster in orbit.

By Dr. Christian Sasse
Human body
Inside the Brain

Spin a 3D brain and light up the regions behind memory, stress, sleep and cravings, in plain language. Then take the quiz.

By Mark Horner
Human body
Inside Celiac Disease

Watch gluten flatten the villi in a 3D model of the gut and see how celiac disease is diagnosed. Then spot the hidden gluten, add up the real cost and take the quiz.

By Mark Horner
Physics
Speed of Light City

Ride through a city where light crawls at 162 km/h. Speed up and watch red lights turn green and the street fold into a tunnel.

By Dr. Christian Sasse
Physics
Periodic Table

Walk across the periodic table, H to Og, and watch each element’s real 3D electron orbitals form in your browser.

By Dr. Christian Sasse

Watch us explore.

How well can an eagle really hear? Christian breaks it down with visuals in this live stream. More walkthroughs are on the way, each linked to its explorable.

Who's behind this.

Two friends who have spent years trying things nobody had tried yet, now building free tools that help people see how things work.

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Dr. Christian Sasse

Physicist, astronomer, photographer

A physicist and astronomer with a PhD in optics and electrical engineering. As chief astronomer with iTelescope, he is known for imaging extremely distant objects with amateur-sized telescopes, and his bald eagle photography has a large, loyal following.

More about Christian

Christian pairs a physicist's training with a photographer's eye. He works with remote telescopes to capture faint, extremely distant objects in the night sky, and he is known for patient, close-up photography of bald eagles in the wild.

He shares his eagle photography and astronomy work as SassePhoto.

Follow Sasse Photo on Facebook ›

If the Facebook app doesn't take you there, copy this address into your browser: facebook.com/SassePhoto

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Mark Horner

Digital learning and training specialist, journalist, author

A digital learning and training specialist for a state government agency, and before that an award-winning television journalist for twenty years. Author of September Sacrifice, and a storyteller who has been trying new tools since the early web.

More about Mark

Mark spent 1987 to 2008 in television news. He started as a one-person band, shooting, writing, editing and presenting his own stories, first in sports and then in news, and carried that do-it-all approach into his next station. He went on to report and anchor across Washington, Arizona, Wisconsin and New Mexico, including ten years in Albuquerque, five each at the CBS and NBC affiliates. His work earned numerous awards, including best investigative reporting more than once.

His book September Sacrifice (Kensington, 2004) tells the story of a disappearance case he covered for years. He has been building websites since 1999 and now produces video and interactive learning tools through Beyond 90 Seconds.

Visit markhorner.com ›

Say hello.

Say hello, tell us how you used an explorable, or point out something we should fix. Teachers, students and the simply curious are all welcome. We read every message.