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#today i learned
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i learned of Samuel Upham, a Philadelphia merchant who printed over $15 million Confederate dollars from 1862-63. The fake notes widely circulated in the South. When investigated by the US Government, his case was dismissed as it's not illegal to counterfeit currency of a country not recognized by the US (x)
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gravityfallsrockz · 5 months ago
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So here's a bit of new Gravity Falls trivia for you....
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unistrugglin · 2 months ago
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Throwback to first weeks of uni and reading about the ancient philosophy in the library. 2nd throwback to trip to Budapest a few weeks ago. Feeling so grateful today ✨
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nasa · 6 months ago
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Our Galaxy is Caught Up in a Giant Cosmic Cobweb! 🕸️
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If we could zoom waaaay out, we would see that galaxies and galaxy clusters make up large, fuzzy threads, like the strands of a giant cobweb. But we'll work our way out to that. First let's start at home and look at our planet's different cosmic communities.
Our home star system
Earth is one of eight planets — Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune — that orbit the Sun. But our solar system is more than just planets; it also has a lot of smaller objects.
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An asteroid belt circles the Sun between Mars and Jupiter. Beyond Neptune is a doughnut-shaped region of icy objects called the Kuiper Belt. This is where dwarf planets like Pluto and Makemake are found and is likely the source of short-period comets (like Haley’s comet), which orbit the Sun in less than 200 years.
Scientists think that even farther out lies the Oort Cloud, also a likely source of comets. This most distant region of our solar system is a giant spherical shell storing additional icy space debris the size of mountains, or larger! The outer edge of the Oort Cloud extends to about 1.5 light-years from the Sun — that’s the distance light travels in a year and a half (over 9 trillion miles).
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Sometimes asteroids or comets get ejected from these regions and end up sharing an orbit with planets like Jupiter or even crossing Earth’s orbit. There are even interstellar objects that have entered the inner solar system from even farther than the Oort Cloud, perhaps coming all the way from another star!
Our home galaxy
Let's zoom out to look at the whole Milky Way galaxy, which contains more than 100 billion stars. Many are found in the galaxy’s disk — the pancake-shaped part of a spiral galaxy where the spiral arms lie. The brightest and most massive stars are found in the spiral arms, close to their birth places. Dimmer, less massive stars can be found sprinkled throughout the disk. Also found throughout the spiral arms are dense clouds of gas and dust called nebulae. The Sun lies in a small spiral arm called the Orion Spur.
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The Milky Way’s disk is embedded in a spherical “halo” about 120,000 light-years across. The halo is dotted with globular clusters of old stars and filled with dark matter. Dark matter doesn’t emit enough light for us to directly detect it, but we know it’s there because without its mass our galaxy doesn’t have enough gravity to hold together!
Our galaxy also has several orbiting companion galaxies ranging from about 25,000 to 1.4 million light-years away. The best known of these are the Large and Small Magellanic Clouds, which are visible to the unaided eye from Earth’s Southern Hemisphere.
Our galactic neighborhood
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The Milky Way and Andromeda, our nearest neighboring spiral galaxy, are just two members of a small group of galaxies called the Local Group. They and the other members of the group, 50 to 80 smaller galaxies, spread across about 10 million light-years.
The Local Group lies at the outskirts of an even larger structure. It is just one of at least 100 groups and clusters of galaxies that make up the Virgo Supercluster. This cluster of clusters spans about 110 million light-years!
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Galaxies aren’t the only thing found in a galaxy cluster, though. We also find hot gas, as shown above in the bright X-ray light (in pink) that surrounds the galaxies (in optical light) of cluster Abell 1413, which is a picturesque member of a different supercluster. Plus, there is dark matter throughout the cluster that is only detectable through its gravitational interactions with other objects.
The Cosmic Web
The Virgo Supercluster is just one of many, many other groups of galaxies. But the universe’s structure is more than just galaxies, clusters, and the stuff contained within them.
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For more than two decades, astronomers have been mapping out the locations of galaxies, revealing a filamentary, web-like structure. This large-scale backbone of the cosmos consists of dark matter laced with gas. Galaxies and clusters form along this structure, and there are large voids in between.
The scientific visualizations of this “cosmic web” look a little like a spider web, but that would be one colossal spider! <shudder>
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And there you have the different communities that define Earth’s place in the universe. Our tiny planet is a small speck on a crumb of that giant cosmic web!
Want to learn even more about the structures in the universe? Check out our Cosmic Distance Scale!
Make sure to follow us on Tumblr for your regular dose of space.
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introvert-unicorn · 11 months ago
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Inspiring latin phrases
Dum Spiro, Spero :  while I breathe, I hope.
Carpe Diem :  seize the day.
Carpe Noctem : seize the night.
Alis Propriis Volat : she flies with her own wings
Acta, Non Verba : actions, not words.
Discendo Discimus : by touching we learn.
Barba Tenus Sapientes :  wise as far as his beard.
Brutum Fulmen :  senseless threat.
Felix Culpa : happy fault.
Ex Nihilo Nihil Fit : from nothing comes nothing.
Audere est Facere : to do is to dare.
Semper Fidelis :  Always faithful.
Amor Omnia Vincit :  Love conquers all.
Bona Fide : with good faith.
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thatadhdfeel · a month ago
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TIL, Some people consume media normally. They call this "not being a fucking weirdo"
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ohthesuspenders · 7 months ago
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so was anyone gonna tell me that neurotypical people don’t just make random sounds at each other instead of having an actual conversation or was i just supposed to know that
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tiltlhat · a year ago
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TIL, that you can go to the TV store and beatup the TVs. awesome
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maxkirin · 5 months ago
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The average word is 4.7 letters long, which means that if you're typing and you want to delete a word, you'd have to press backspace what, 5 times? Who's got time for that?
Here's a writing tip, the shortcuts below will actually delete a whole word at once! You're welcome~ 🤓
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pupkin · 3 months ago
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i learned that the city of Sodo in Ethiopia only gets up to 57F (14C) average temperatures in the summer despite being near the equator because of its location in the Ethiopian Highlands. The city's highest point is roughly 1700 ft higher than Denver (x)
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TIL that scientists were able to create a material that is similar to wood. It was made using shrimp cells and it can be modified to be magnetic, water-resistant, and fire-resistant
via reddit.com
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animalcrossingmemes · 6 months ago
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unistrugglin · a month ago
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Reading about the Anthropocene for my tomorrow class 🤓
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photonblasters · 7 months ago
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little fun fact for my science nerds:
It actually snows on Mars! Although it never reaches the ground, snow does fall within its atmosphere! The snow was discovered in 2008 by NASA's Mars Phoenix Lander with its laser.
so basically mars is an aesthetic winter wonderland
i hope you enjoyed my midnight space fact <3
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introvert-unicorn · 8 months ago
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What you can say to describe the Sun
Magnificently radiant
Soft unfailing
Overpoweringly bright
Bright and gorgeous
Flashingly bright
Universal and resplendent
 Marvelous clear 
Motionless 
Fierce western
Immense newborn
Glorious
Incredibly strange and wonderful 
Graciously warm
Fiery and pitiless 
Hot and powerful
Imperial and royal
Huge inflamed 
Fiery and eternal
Uncommonly red
Scintillating 
Warm autumnal 
Dim and ancient
High and unforgiving 
Cancerous orange
Strange and mystical
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minhtblue · 7 months ago
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this comes from a convo i had with @mochaart wherein it was discovered that searching ‘heartcore’ on its own gets you pictures of... pilates. not the fashion style. i’ll see myself out o__o
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recovering-catholic · 4 months ago
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belle-epochalypse · 5 months ago
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TIL why so many blacksmith/forge gods in ancient mythologies have physical disabilities: arsenicosis, caused by the low yet poisonous levels of arsenic added to bronze to make it harder. Making tools and weapons every day at work would result in lameness and skin cancers for smiths of the Bronze Age. And I don’t know, but there’s something really sweet about how, when humans created divine beings to epitomize the world around them, they didn’t erase the chronic illnesses of the blacksmiths they knew. Instead, they elevated them to godhood.
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tiltlhat · 2 years ago
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TIL, The cycle of death and rebirth cruel cruel cruel cruel cruel cruel cruel cruel cruel cruel cruel cruel cruel cruel cruel cruel
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