People In This Thread Share Scientific Facts That Are Unbelievable, Here Are 59 Of The Most Interesting Ones

People In This Thread Share Scientific Facts That Are Unbelievable, Here Are 59 Of The Most Interesting Ones

Science is a gift that keeps on giving. It enables us to understand some of the world’s most mind-boggling phenomena and the constant discoveries mean that there’s always something new to learn.

Redditors recently shared some astonishing scientific facts with the 'Ask Reddit' community. Thanks to the user rambojambo11 who started the discussion on this topic, they compiled quite a collection of pieces of information that sound unbelievable. We have combed through it to present to you some of the most fascinating ones, so keep scrolling for your daily dose of science. Also, if you get hooked after reading this list, don’t worry, there’s more here.


Giraffes’ tongues are black and purple to prevent sunburn while they’re feeding up high.

Image credits: aprilmayjunejuly21


Infrared light was discovered all the way back in 1800. By accident. With a thermometer.

William Herschel (who also discovered Uranus) was experimenting with a prism. He wanted to see if different colors of light had different temperatures. So he had the room completely dark except a beam of light hitting a prism and casting a rainbow onto the table. He had placed thermometers in each color band to see if there was a difference. As a control, he had an additional thermometer past the ene of the light below the red band.

Except when he compared his readings he got something strange: the control thermometer was reading the highest temperature of all. This didn't make any sense. Was his thermometer faulty? He tried a few more tests with more thermometers in other places and came to an inescapable conclusion: there must be an additional invisible "color" below red that carried more heat than any of the visible colors. He named it infrared, which just literally means "below red".

Image credits: sharrrper


30-50% of people don’t have an internal monologue.

Image credits: toasted_oatsnmore


Sharks pre-date trees

Image credits: Suuperdad


A serving of movie theater popcorn is equivalent to two Big Macs, in terms of calories, saturated fat, and sodium.

Image credits: heidismiles


Water IS actually blueish-greenish in color. It's just a very very weak tint, so it usually appears simply transparent (and reflecfing the color of stuff around and inside it). But when it's in very large volume, in a perfectly white room, under perfectlu white light, the water's very own teal colour becomes visible.

Similarily, the sun seems goldish-orange from Earth due to the atmosphere. The light of the Sun itself is mostly white. However, if we were to analise the light very accurately, it's actually a very subtle pale greenish/lime. We still see it as plain white in space, but I just think it's so cool.

Image credits: DiagonallyStripedRat


The immune system does not encounter viruses and formulate an antibody that matches its shape. Instead, the immune system pumps out random antibodies that sometimes happen to match a virus it comes into contact with, and then begins to produce more of that specific antibody.

Image credits: davilambic


Apart from hosting life, the rarest thing about earth may be its eclipses. It is a complete coincidence that the moon is the same size, and orbits in the path of, our sun.

Image credits: Wazula23


The blue whale, at nearly 100 feet long and nearly 200 tons, is the largest animal known to have ever existed.

Image credits: TwoTheVictor


On average Mercury is the closest planet to Earth by a considerable margin.

Image credits: Fracture_98


If you got sucked into a black whole, time would slow down too. Meaning while you are getting Spaghetiified, time is slowing down to the point where you will watch the universe die with you

Image credits: Mysterious-Bench-527


Magnolias predate bees and were first pollinated by beetles and earlier bug species.

Image credits: TheBarenJark


if someone were to scream nonstop for a year it would generate enough energy to heat up a cup of coffe

Image credits: GBgabe13


There was a scientific paper published by a physicist, backed by numerous prominent scientists, that determined that peanut butter has no appreciable effect on the rotation of the Earth...

Image credits: Cranzeeman


1.3 million earths can fit inside the sun. 5 BILLION suns can fit inside the largest star ever observed, UY Scuti.

Image credits: marcw14


A mirror is technically a time machine. When you look at your reflection, you're not looking at your ACTUAL reflection, you're perceiving photons that hit the mirror an immaterially short time before and is just now hitting your eyes. So you're actually seeing a picture of yourself from the past.

That's a vast oversimplification but, yeah.


In Newtonian physics it was generally accepted that a planet call Vulcan was closer to the sun than Mercury. The math needed some kind of extra planet to explain Mercury's weird orbit. Astronomers around the world for a couple hundred years would confirm a sighting, but it would never be there when you tried to use physics to predict where it would be. Even the famous french scientist that found Neptune with math predicted Vulcan using the same formulas. The idea didn't die until Albert Einstein changes physics with special relativity. Suddenly all the orbits of our planets make sense and Mercury has a weird orbit because it is so close to the sun.

Basically, smart dudes figured a planet existed when it didn't because their system didn't work out. It took changing the system to meet reality. Confirmation bias is a scary thing.

Edit: General Relativity not Special.

Image credits: GoodRighter


Female ferrets die if they don't find a partner to make with. Since they don't leave "Heat" Until they're mated with, the Oestrogen overload leads to Anemia, and death.

Image credits: TheEyeOfLight


Soap works simply because it makes water **more wet**.

Soap breaks surface tension, easing water's ability to get into cracks and crevices, to wash away dirt deposits.


The sound of a crack of a whip breaks the sound barrier.


Some people have extra spleen or liver that are pea sized.

Image credits: iremovebrains


1 billion seconds is over 32 years

Image credits: oceanicusprime


If you could fold a sheet of paper in half 50 times it would be 100 million km thick

Image credits: cheesecutter13


The largest organism in the world is a massive underground network of mushrooms.

Image credits: Easy_Cauliflower_69


that the human brain is the only organ in the history of existence that named itself.


There's a small chance that, if you were to slap your hand on a table, all the molecules in your hand would miss the table and go right through it.

The odds are *astronomically* tiny, but not zero.


There was a period of about 50 Million years when we had trees on earth but nothing to decompose dead ones, so they just piled up, and up, deeper and deeper, they got buried and eventually we got coal!

Image credits: DrTriage


There are some Ice Age animals that are so perfectly preserved in permafrost that scientists have been able to find them still with all their soft tissue, hair, and organs. They even found a couple mammoths that still had liquid blood in them and I remember one scientist even tasting the mammoth meat.

Also there was a mummy found in China that was so well preserved that she still had all her skin, hair, organs, etc. Her body was even flexible that you could bend her limbs as if she was alive. They even found her last meal still in her stomach and could perform an autopsy on her to tell you why she died. She died over 2000 years before she was found.


All the planets in our solar system could collectively fit in one continuous line between the earth and the moon

Image credits: stainedtoothbrush


a photon of light doesnt experience any time from the time it is emitted to the time it is absorbed. It was born, it died, all in one instant.

Image credits: bonjelascott


The energy expended by a feather hitting the floor is more energy ever collected by every radio telescope ever built.

Image credits: Josh_Your_IT_Guy


It's almost 20 kilometres from the top of Everest to Challanger Deep at the bottom of the Mariana Trench.

Scaled down to size of a billiard ball, the earth would be smoother than any billiard ball ever manufactured.


The key to eternal life is coded into all known DNA cells but so far proven impossible to crack. Every known living thing generates, adds, becomes bigger, better, stronger faster up to a certain point to then suddenly reverse and we don't know why.

When a baby grows it's cells form al sort of usefull things. At around 21 years old the process reverses and science can't figure out why. Technically we should be able to regenerate indefinitely.


GPS tracking is not the satellites tracking the object, but the object tracking the satellites.

Image credits: UnethicalFood


"The power required to make a 1000 decibel noise for one second is equivalent to the power of the entire sun for 4 billion years"

A family member was talking about a "600 DB" car horn he bought over the holidays, and I was trying to explain to him that 600 DB is enough energy to destroy the planet and then some. Lol

Image credits: Blacksixki


[Astronomers estimate there exist roughly 10,000 stars for each grain of sand on Earth. That’s a lot of stars.](

this blow my mind...


The odds of my girlfriend having the same key in our city (San Diego) turns out to 1:724,480 but it seems impossible.
After a year of dating, turned out we have the same key to our individual apartments. (Different lock manufacturers)


the size of the universe is actually speeding up instead of slowing down.

we are actually made of stardust. so the stars died so you could exist.

Image credits: maff0000


There are different sizes of infinity


A pregnant woman carrying a daughter is also carrying all future grandchildren from that daughter at the same time.


If you put all the DNA molecules in your body end to end, the DNA would reach from the Earth to the Sun and back over 600 times


A randomly shuffled deck of cards most likely has never been seen before and will never be seen again. 52 factorial (52!). Obviously I didn’t come up with this. But wow. It’s very easily searched online. Blew my mind.

*edit: parenthesis


Kiwis have more vitamin C than an orange ?!

Image credits: SuppleVibes


I forget who says it. But a great scientist said once “if you look anywhere in the universe, you should see an equal amount of mass”. I think this is the the cosmological principle by Einstein I wanna say.

Well the “Hercules-Corona Borealis Great Wall” doesn’t care. It is a huge group of galaxies forming a giant sheet-like pattern which is about 10 billion light-years long, 7.2 billion light-years wide, and almost 1 billion light-years thick.

Mind you our galaxy is only 200,000 light years across.

Also the universe is only 13.8 billion years old. So.. this wall also contradicts theories about the evolution of the universe. The structure is 10 billion light-years away, which means that we see the structure 10 billion years ago, when the universe is only 13.8 billion years old, and its light was just approaching us. The 3.8 billion year span of time is too short for a giant structure 10 billion light-years long to form.

The mind boggles.


A mountain on a neutron star is only a few inches high.

The amount of energy "lost" for the Earth to orbit around the sun is equivalent to running a space heater.

The mites on your eyebrows & eyelashes have no anuses and will eventually explode from a buildup of fecal matter.

Dog cancer is contagious and has been traced back thousands of years to one individual.

Human lice cannot live on any other animal and using the "genetic clock" an approximation can be determined on when humans first started wearing clothing.

The name for natural gas comes around because coal gas was refined for lighting but the other came straight out of the ground.

Wallabies have square poop.

People have fallen from heights above 18,000 and survived. Stewardess from Yugoslavia Airlings (bombing), a girl fell into the Amazon rainforest and WWII aircrews falling from their planes.

Honey is still edible after thousands of years under ideal circumstances.

There was a chicken that survived getting its head chopped off and became a circus oddity (it eventually choked to death after its owner fed it).

Dinosaur fossils have been discovered with soft tissue inside the bones, paleontologists determined the color patter of some species and an armored dinosaur mummy was found in Alberta.

The moon moves away from the earth at a rate of an inch a year.


There is a star that, if you analyse the light eminating from it over time, looks really freaking weird compared to all other observable stars. This star was discovered by citizen scientists, and likely would have been missed by 'normal' anomaly discovery techniques.


If you take a bunch of skin cells from a developing embryo and place them into a Petri dish they will self assemble and begin performing tasks. Look up Dr. Michael Levin xenobots for more info


4/5 of all the animals on earth are nematodes (microscopic roundworms)

Image credits: feliciates


A gamma ray can strike us any time and wipe all Live on Earth out.


All matter in the universe is made of elementary particles which aren't particles but wave forms or ripples. So the whole of human existence is just a killer song or a really big plunk in a multicosmic pond.


In the entire records of human history, there are only 16 instances of recorded hammerhead shark bites on humans, and not a single fatality.


There are more trees on earth than stars in the milky way


Not super scientific but an animal fact TONS of people refuse to believe. Monkeys are omnivores and they love to eat meat, more so than fruits and vegetables. I mean Monkeys, not apes lots of people group them in the same category


Lake Superior can hold all of the water from the rest of the Great Lakes combined with room to spare.

This is more geography, but it always blows my mind when looking at a map that the continent of South America is almost entirely east of the United States.


Dinosaur fossils existed while dinosaurs were still alive.


Peanut are not nuts. Neither are cashews. Peanuts are legumes. Cashews are seeds.


Benford's law, absolutely mindblowing:

An observation that in many real-life sets of numerical data, the leading digit is likely to be small.

The number 1 appears as the leading significant digit about 30% of the time, while 9 appears as the leading significant digit less than 5% of the time. If the digits were distributed uniformly, they would each occur about 11.1% of the time.

It has been shown that this result applies to a wide variety of data sets, including electricity bills, street addresses, stock prices, house prices, population numbers, death rates, lengths of rivers, and physical and mathematical constants.

Source: wikipedia because this is very difficult to explain

Much better explained by Latif Nasser here!:

[]( at 2:11


If we tie a string tightly around a basketball then we need to add 6.28 inches of string to raise the string 1 inch above the basketball all the way around. Unbelievably, if we tie a string tightly around the equator of planet Earth then we still only need to add 6.28 inches of string to raise the string 1 inch above the entire planet all the way around.


Wombats' poop is cube shaped. Not sure that counts cause I believe it though?
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