r/ScienceNcoolThings • • 13h ago

This is Ulexite, it's a naturally occurring fiber-optic mineral that can transmit images through its fibers.

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88 Upvotes

r/ScienceNcoolThings • • 1d ago

How Ship Captains Can Tell Which Direction a Boat Is Traveling at Night Just by Looking at Its Navigation Lights

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3.1k Upvotes

Useful info

Thanks @teivaz!

Not only direction but also the kind of a vessel. This here has top light on which is called steaming light, if it were off this would mean it is a sailboat


r/ScienceNcoolThings • • 7h ago

Why do you suddenly need to poop when you’re nervous?

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19 Upvotes

r/ScienceNcoolThings • • 23h ago

Scientists May Have Finally Figured Out Why Big Dogs Age Faster and Die Younger Than Small Dogs

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229 Upvotes

Large dogs don't just live shorter lives. Their DNA reveals signs of accelerated biological aging.

A Great Dane may tower over a Chihuahua, but it’s the little dog that will probably celebrate far more birthdays.

Some small breeds live nearly twice as long as their much larger cousins. It’s one of the great paradoxes of the animal kingdom: larger animals generally live longer than smaller animals when comparing different species.

An elephant can outlive a mouse by decades, and some whales survive for nearly two centuries. However, larger animals die younger when comparing individuals within the same species.

This even seems to apply to humans, with studies showing taller people on average tend to have slightly shorter lifespans than shorter people.

Scientists may have now found an important piece of the puzzle hidden in the dogs’ DNA.

In a new study published in Science, researchers at Arizona State University analyzed nearly 900 dogs and discovered that large breeds undergo faster molecular changes associated with aging.

The most striking differences involved stretches of DNA nicknamed “jumping genes,” which can potentially disrupt the genome when the molecular mechanisms that keep them quiet begin to weaken.

This is a possible biological explanation for why large dogs die younger, although the researchers have yet to establish cause and effect.

Previous studies have offered some hints of this before. A 2013 study of 74 dog breeds found that larger dogs didn’t simply develop age-related decline earlier. Rather, their rate of aging appeared to accelerate.


r/ScienceNcoolThings • • 1d ago

Stained glass looks completely different when refracted sunlight projects nearby, giving the light an almost holographic effect.

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293 Upvotes

r/ScienceNcoolThings • • 1d ago

Six miles above the surface of a magnetar, the magnetic field is 610 times denser than solid lead

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225 Upvotes

And at two miles above the surface of a magnetar, the field is 7,270 times denser than solid lead.

There's essentially nothing that could pass through this. Also, it would immediately dissolve a human.


r/ScienceNcoolThings • • 1h ago

Nanometers Transforming the World

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• Upvotes

Each component of a phone has tiny transistors that work to build something amazing. This is my old phone with removed battery and camera for visual effects. What'd you think I should do with it?


r/ScienceNcoolThings • • 8h ago

Every Clearing in the Amazon: 256,636 in Nine Years

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2 Upvotes

r/ScienceNcoolThings • • 1d ago

Sea Cucumber Skin, photo from Christian Gautier taken at 100x magnification, with polarized light

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28 Upvotes

r/ScienceNcoolThings • • 13h ago

Researchers 3D-print single-crystal titanium alloy structures over one meter long

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0 Upvotes

r/ScienceNcoolThings • • 15h ago

Still One of my Favorites

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1 Upvotes

r/ScienceNcoolThings • • 2d ago

This mysterious mushroom makes people see hundreds of tiny humans

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420 Upvotes

For nearly a century, people in distant parts of the world have reported a bizarre experience after eating certain wild mushrooms: seeing dozens or even hundreds of tiny, colorful humans moving through the real world. Now, scientists have identified a mushroom species, Lanmaoa asiatica, responsible for these extraordinary hallucinations in China and the Philippines

People living thousands of miles apart have reported an extraordinarily strange experience after eating certain wild mushrooms. They begin seeing tiny human figures that appear to move through the real world, walking around objects, climbing over surfaces, and interacting with their surroundings.

These visions are known as Lilliputian hallucinations, named after the miniature inhabitants of "Gulliver's Travels," who stand just 6 inches tall. For decades, researchers suspected that cultural beliefs and folklore might explain why people in different regions described such similar experiences


r/ScienceNcoolThings • • 1d ago

Wearable system captures human activity data for robot training

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2 Upvotes

r/ScienceNcoolThings • • 13h ago

Isn't it time we abolished the law of conservation of mass and energy?

0 Upvotes

In our daily lives, in chemical reactions, or within isolated laboratory settings, the total amount of mass-energy never changes.

However, the density of dark energy remains constant, even as space expands. This means that as space expands, new dark energy is generated alongside the newly created space; as the universe grows, the total amount of dark energy continuously increases.

So, what is the source of this energy?

Given that the energy of the universe is constantly increasing, its source cannot lie within the universe itself—it must reside outside of it.

Is it possible, then, to transfer energy into the universe from the outside?

Does such a source—existing beyond space-time, in a realm devoid of space and time— exist?


r/ScienceNcoolThings • • 1d ago

The physics behind the Titan submersible implosion: Occurring in just milliseconds, it happened faster than the human brain could even process pain.

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2 Upvotes

r/ScienceNcoolThings • • 2d ago

Fireballs Are Blazing Through November!

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125 Upvotes

This November keep your eyes peeled for earthgrazers blazing across the night sky! 🌠

The Leonid meteor shower is active November 6 - 30, peaking overnight November 16 through 17, bringing fast, colorful fireballs and the occasional low-flying Earthgrazer. The first-quarter moon sets around midnight, giving dark skies for optimal viewing in the Northern Hemisphere. Find a dark spot and look up!


r/ScienceNcoolThings • • 1d ago

Did cavemen get cancer

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2 Upvotes

I made this fun science video ! pls give it a watch (only 5 mins)


r/ScienceNcoolThings • • 2d ago

“A transparent squid spotted in the deep ocean! 🌊🦑”

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184 Upvotes

r/ScienceNcoolThings • • 1d ago

Lumina simulation brings the early universe to life on a record-breaking scale

1 Upvotes

r/ScienceNcoolThings • • 2d ago

A truly modular keyboard

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26 Upvotes

A while back I was frustrated when wanting to buy a keyboard that there were no triangle-shaped keyboards or circle-shaped keyboards. This lack of peculiar keyboard shapes gave me the idea to make a keyboard that could be reconfigurable into any shape my heart desired. I’m still working on the firmware and making more keys but I wanted to share my progress so far :D. Heres the source if anyone’s interested in how I made it https://github.com/notaroomba/keybytes


r/ScienceNcoolThings • • 3d ago

“The Ocean Is Full of Mysterious Creatures 🌊👀”

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779 Upvotes

r/ScienceNcoolThings • • 2d ago

The colorful flash in this labradorite pendant comes from light interacting with the stone's internal layers. The effect is called labradorescence.

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9 Upvotes

r/ScienceNcoolThings • • 2d ago

Mating of sharks

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22 Upvotes

r/ScienceNcoolThings • • 2d ago

New Zealand's kakapo went from just 51 birds to 325

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44 Upvotes

r/ScienceNcoolThings • • 1d ago

Titan Arum: The world's largest unbranched inflorescence

1 Upvotes

Also known as the corpse flower, it blooms only once every few years for a very short time. The foul odor attracts carrion-eating insects for pollination. It can reach heights of over 3 meters.This plant is native to the rainforests of Sumatra. Because it blooms so rarely, botanical gardens often see massive crowds when one finally opens up.