Due to relativity the core of the earth is 2.5 years younger than the crust sciencemag.org/news/2016/…
The speed of light was first estimated in 1676 by a Danish Astronomer who was timing the eclipses of Io caused by Jupiter. He noticed the period between eclipses increased with Earth's distance from Jupiter and guessed it was because light had to travel a longer distance. en.wikipedia.org/w/index.…
Before trees (~400 million years ago) the Earth's landscape was dotted with 24ft tall, 3ft wide mushroom spires called Prototaxites smithsonianmag.com/smart-…
H.R. Giger (the designer of the alien in Alien), once got stopped by Dutch customs because of his disturbing drawings, which they thought were photographs. Giger later said: "Where on Earth did they think I could have photographed my subjects? In hell, perhaps?" theguardian.com/artanddes…
Jupiter's moon Europa is covered by a thick layer of ice, with a huge subsurface ocean of liquid water underneath it. Estimates give the ocean an average depth of 100km, and a radius of 877km. This equates to 3 times the combined volume of water of Earth's oceans. apod.nasa.gov/apod/ap1205…
Sagittarius A* - the supermassive black hole at the center of the Milky Way - has a mass 4 million times that of our Sun, but a diameter only 31 times the Sun's. It is so dense that it could fit in the space between the Earth and the Sun, but can attract things 50k light years away. en.wikipedia.org/wiki/Sag…
The cone snail, one of the most venomous animals on earth, releases a cloud of insulin when a fish swims by, causing it to go into hypoglycemic shock, immobilizing it so it can inject the fish with a cocktail of up to 200 toxins museumsvictoria.com.au/ar…
Plants make up 82% of the total biomass of Earth. Of all the mammals on Earth, 96% are livestock and humans, only 4% are wild mammals. Of all the birds on Earth, 70% are chicken and poultry, 30% are wild birds. The total biomass of the human race accounts for just 0.01% of all life on Earth. theguardian.com/environme…
Today I learned about the Rare Earth Hypothesis, which argues that the origin of life and the evolution of biological complexity on Earth required an improbable combination of events and circumstances. It rejects the Mediocrity Principle, which argues that the existence of life on Earth is nothing special. planetary-science.org/ast…
Today I learned about the Megagon, a shape with 1,000,000 sides that, even if it were drawn at the size of the Earth, would be hard to distinguish from a circle. en.wikipedia.org/wiki/Meg…
There are more living organisms in one teaspoon of soil than there are humans on earth. Happy World Soil Day! naturalcapitalcoalition.o…
While it takes 8+ minutes for a photon to travel from the sun to the earth, for the photon it leaves the sun and arrives at the earth in the same instant. Things that travel at the speed of light do not experience time. futurism.com/photons-mill…
Over time diamond degrades to graphite as its atoms internally rearrange and relax to a lower energy state. However, at Earth's surface temperature, this process can take millions of years, which makes the phrase "diamonds are forever" a very good approximation to reality on a human time-scale. wtamu.edu/~cbaird/sq/2013…
The Aztec god Tlaloc required the tears of the young as part of their human sacrifice. The priests made the children cry during their way to immolation, which was taken as a good omen that Tlaloc would wet the earth in the raining season. en.wikipedia.org/wiki/Hum…
According to an index developed in 2015, Earth is not the most habitable planet found yet. Kepler-442b, a rocky near-Earth-sized exoplanet that is 1206 light-years away from Earth and orbits within its star's habitable zone, has a rating of 0.836. On the other hand, Earth has a rating of 0.829. en.wikipedia.org/wiki/Kep…
A computer beat the best chess player on earth in '97, but it would take 20 years before one beat the best "Go" player, due to the incredibly complex nature of the game. The program - AlphaGo - is so complex even the programmers themselves can't fully explain how it creates strategy. en.wikipedia.org/wiki/Alp…
Out of all the species that ever lived throughout all of Earth’s history, only a fraction of a percent have fossilized. Even fewer are discovered by humans. Most of life’s history will be forever unknown en.wikipedia.org/w/index.…
The only place on Earth where both crocodiles and alligators live together is in the United States, in the Florida Everglades. evergladesholidaypark.com…
After L. Ron Hubbard's death in 1986, the Church of Scientology officially claimed that he voluntarily abandoned his physical body after it became an impediment to his work, and that he had left Earth to do scientific research on another planetβ€”having "learned how to do it without a body". en.wikipedia.org/wiki/L._…
99.9% of all species that have lived on Earth, are already extinct. theconversation.com/will-…
Singapore used to be a part of Malaysia, but was involuntarily expelled in 1965, before outperform its former motherland to become one of the richest nations on Earth en.wikipedia.org/wiki/His…
86% of the Earth's species are unnamed. We know many of them exist, they just haven't been rigorously proven & classified (it takes a lot of time & paperwork). There are about 7.5 million unnamed species out there, and most scientists will classify less than 100 in their lifetime. nationalgeographic.com/ne…
Days are 1.7 ms longer today than they were 100 years ago because the rotation of the earth is gradually slowing. universetoday.com/47181/e…
The sky on Mars is red and its sunsets are blue, exactly the opposite of Earth's. solarsystem.nasa.gov/news…
Even though our solar system has over 200 moons, ours is the 5th largest. Jupiter is over 10x the size of Earth but its largest moon is not even twice the size of our moon. Mars has two moons but they are tiny rocks, not even round, 1% the size of ours. en.wikipedia.org/wiki/Lis…
Some of the Challenger crew were awake and alert when the cockpit separated from the vehicle and fell to earth at 500 MPH. They activated their "PEAPs", which is a manual switch which turns on supplemental air. This was discovered after recovery of the vehicle cockpit. en.wikipedia.org/wiki/Per…
Due to Gravitational time dilation, Earth's core is effectively 2.5 years younger than its surface which compounded over the planet's age of billions of years! en.wikipedia.org/wiki/Gra…
Today I learned that the surface of the earth at the equator moves at a speed of 460 meters per second! scientificamerican.com/ar…
A 2015 study concluded that the the Universe will form over 10 times more planets than currently exist, that our own galaxy is expected to host ∼10^9 Earth-like planets, and that this would imply at least a 92 per cent chance that we are not the only civilization the Universe will ever have. academic.oup.com/mnras/ar…
In 1997 the first Astronaut voted from space. Since then, every American Astronaut votes from Space as an absentee voter for the state of Texas (where the Johnson Space Center is located), where they list their address as β€œlow-Earth orbit.” airandspace.si.edu/storie…
As Apollo 8 was on its way back to Earth, astronaut Jim Lovell accidentally erased some of the guidance computer's memory, leading the computer to think the spacecraft's current orientation was what it had been on the launchpad. He would spend the next 25 minutes correcting it. en.wikipedia.org/wiki/Apo…
Pepsi spent millions of dollars on a logo redesign in 2009. The three different colored sections are supposed to resemble the U.S flag. The colors are supposed to represent earth's magnetic fields, feng shui, and the theory of relativity. It also has references to the Mona Lisa. designyourway.net/blog/gr…
In early 1990s, NASA sent jellyfish to space to test how spaceflight would affect their development. The jellies did not develop the proper gravity-sensing capabilities and had trouble figuring how to swim around in normal gravity, with abnormal pulsing and movement when returned to Earth. popsci.com/article/techno…
Earth's largest waterfall is... underwater. In the Denmark Strait, a warm sea collides with a cold sea, pushing the colder water over a very tall ridge β€” for nearly TWO MILES (3.2km). That's almost 4x longer than the biggest waterfall on land! From the surface, you wouldn't notice at all. oceanservice.noaa.gov/fac…
America considered weapon system called Thor or Rods of God. This would have been a upgrade from the"Lazy Dog Bombs. These Rods are kinetic projectiles made from tungsten from Earth's orbit with impacts of speed of Mach 10. This concept of Kinetic Bombardment started in the Cold war. businessinsider.com/air-f…
, Sperm whales, the biggest toothed whale on Earth, dont actually have teeth in the top jaw. They instead have sockets in the upper jaw that the bottom teeth fit neatly in to. ocean.si.edu/ocean-life/i…
A Sperm whale can click at about 236 decibels, making it the loudest animal on Earth. Some researchers believe they can contact each other in the ocean even from opposite sides of the planet. For comparison, a jet engine takeoff registers 150 dB. NASA's Saturn V rocket launch registered 204 dB. youtube.com/watch?v=zsDwF…
Today I learned of the Boring Billion, also known as the Dullest Time in Earth's History, a billion-year geological period characterised by little in the way of tectonic changes, climate change, or evolution en.wikipedia.org/wiki/Bor…
According to the Hindu Theory of World Cycles, the Universe is billions of years old; Earth is struck by a global catastrophe every few million years; and an advanced civilisation, in which people were happier, taller, and lived much longer than today, was wiped out about 4 million years ago. baharna.com/karma/yuga.ht…
While many believe that earth's oxygen comes from rainforests, tiny ocean plants called phytoplankton contribute 50-80% of the oxygen on earth earthsky.org/earth/how-mu…
That, on average, Mercury is not only is the nearest planet to the Earth , but to all the other planets in the solar system. physicstoday.scitation.or…
Due to gravitational time dilation the earth's core is 2.5 years younger than the surface. This is the effect whereby time passes slower the closer you are to a source of gravitation (as depicted in Interstellar). futurism.com/thanks-to-ti…
Ethereal singer Enya's vocals sometimes didn't translate well from existing Earth languages, so her collaborator Roma Ryan constructed an futuristic language called "Loxian" for her. Roma also created an online video game to educate others about Loxian culture. en.wikipedia.org/wiki/Lox…
A Group Of Flat Earthers Spend $20,000 Trying To Prove Earth Is Flat, Accidentally Prove It's Round triplem.com.au/story/flat…
The True South Pole (Earth's axis) is nearly 2,000 miles away from the magnetic South Pole. antarctica.gov.au/about-a…
The longest straight-line path you can take on Earth while only travelling on land goes from Jinjang, China to Sagres, Portugal. It is 11.241 km (6.984 miles) long without ever hitting the sea. technologyreview.com/2018…
If you are standing on the moon, the earth has a largely fixed position and does appear not move in the sky other than rotating on it's axis every 24 hours and 40 min, getting bigger or smaller each month, or slightly moving due to change in lunar tilt starchild.gsfc.nasa.gov/d…
Today I learned about the formation of sand from quartz. As magma in the Earth's crust cools, its excess silica crystallizes and forms quartz (SiO2). Over million of years, quartz grains are carried by water streams to the oceans. Most of the world's sand is made up of those quartz grains. britannica.com/video/1856…
Today I learned of The Purple Earth Hypothesis Which States that Photosynthetic Life Forms of Early Earth were Retinal-Based Rather than Chlorophyll-Based, Making Earth Appear Purple Rather than Green en.wikipedia.org/wiki/Pur…
A large lunar rock nicknamed Big Bertha, found by Apollo 14 astronauts, is likely a terrestial meteorite. It bears remarkable similarity to zircon found on Earth and dissimilarity to other lunar samples. It is also the third largest lunar rock sample retrieved, measuring at 8.998 kilograms. en.wikipedia.org/wiki/Big…

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