All the Contents of the Universe, in One Graphic
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All the Contents of the Universe, in One Graphic



Infographic showing the composition of the universe

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All the Contents of the Universe, in One Graphic

Scientists agree that the universe consists of three distinct parts: everyday visible (or measurable) matter, and two theoretical components called dark matter and dark energy.

These last two are theoretical because they have yet to be directly measured—but even without a full understanding of these mysterious pieces to the puzzle, scientists can infer that the universe’s composition can be broken down as follows:

Component Value
Dark energy 68%
Dark matter 27%
Free hydrogen and helium 4%
Stars 0.5%
Neutrinos 0.3%
Heavy elements 0.03%

Let’s look at each component in more detail.

Dark Energy

Dark energy is the theoretical substance that counteracts gravity and causes the rapid expansion of the universe. It is the largest part of the universe’s composition, permeating every corner of the cosmos and dictating how it behaves and how it will eventually end .

Dark Matter

Dark matter, on the other hand, has a restrictive force that works closely alongside gravity. It is a sort of “cosmic cement” responsible for holding the universe together. Despite avoiding direct measurement and remaining a mystery, scientists believe it makes up the second largest component of the universe.

Free Hydrogen and Helium

Free hydrogen and helium are elements that are free-floating in space. Despite being the lightest and most abundant elements in the universe, they make up roughly 4% of its total composition.

Stars, Neutrinos, and Heavy Elements

All other hydrogen and helium particles that are not free-floating in space exist in stars.

Stars are one of the most populous things we can see when we look up at the night sky, but they make up less than one percent—roughly 0.5%—of the cosmos.

Neutrinos are subatomic particles that are similar to electrons, but they are nearly weightless and carry no electrical charge. Although they erupt out of every nuclear reaction, they account for roughly 0.3% of the universe.

Heavy elements are all other elements aside from hydrogen and helium.

Elements form in a process called nucleosynthesis, which takes places within stars throughout their lifetimes and during their explosive deaths. Almost everything we see in our material universe is made up of these heavy elements, yet they make up the smallest portion of the universe: a measly 0.03%.

How Do We Measure the Universe?

In 2009, the European Space Agency (ESA) launched a space observatory called Planck to study the properties of the universe as a whole.

Its main task was to measure the afterglow of the explosive Big Bang that originated the universe 13.8 billion years ago. This afterglow is a special type of radiation called cosmic microwave background radiation (CMBR).

Temperature can tell scientists much about what exists in outer space. When investigating the “microwave sky”, researchers look for fluctuations (called anisotropy) in the temperature of CMBR. Instruments like Planck help reveal the extent of irregularities in CMBR’s temperature, and inform us of different components that make up the universe.

You can see below how the clarity of CMBR changes over time with multiple space missions and more sophisticated instrumentation .
CMBR Instruments

What Else is Out There?

Scientists are still working to understand the properties that make up dark energy and dark matter.

NASA is currently planning a 2027 launch of the Nancy Grace Roman Space Telescope, an infrared telescope that will hopefully help us in measuring the effects of dark energy and dark matter for the first time.

As for what’s beyond the universe? Scientists aren’t sure.

There are hypotheses that there may be a larger “super universe” that contains us, or we may be a part of one “island” universe set apart from other island multiverses. Unfortunately we aren’t able to measure anything that far yet. Unravelling the mysteries of the deep cosmos, at least for now, remains a local endeavor.

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Vintage Viz: China’s Export Economy in the Early 20th Century

This pie chart, circa 1914, is a fascinating breakdown of China’s export economy just prior to World War I.



Vintage Viz: China’s Export Economy in the Early 20th Century

“The past is a foreign country; they do things differently there” is the oft-quoted first line of L.P. Hartley’s 1953 novel, The Go-Between .

A statement that is as profound as it is banal. In other words, when we do history, we’re a bit like tourists. If we really want to understand the past, we have to think like a local.

The infographic above, Aspects of Principal Exports of Chinese Goods to Foreign Countries , is the first in a series that we’re calling Vintage Viz , which presents a historical visualization along with the background and analytical tools to make sense of it.

Today, the People’s Republic of China is the second largest economy in the world, a permanent member of the UN Security Council, and a growing military power . But at the dawn of the 20th century, things were much, much different.

Opium and the Opening of China to the West

Early Sino-Western trade was restricted by the Qing emperors to three ports, and after 1757, just one, in what became known as the Canton System. This name came from the one remaining port city of the same name, present-day Guangzhou.

Foreign trade was tightly monitored and subject to stiff tariffs, and Western traders chafed under these restrictions. So when in 1839, Chinese authorities moved to shut down opium smuggling—an important source of profit for foreign merchants—Western powers saw their chance and used the pretext to revise the terms of trade by force.

In what became known as the Opium Wars, 1839-1842 and 1856-1860, first Great Britain and then an Anglo-French alliance defeated imperial China and imposed punitive treaties that included indemnities and lowered tariffs, but also expanded the number of ports open to foreign traders, first to five and by 1911, to more than 50.

Map of China in 1904

Westerners were exempted from local laws, Christian missionaries were allowed to proselytize freely, and the opium trade was legalized. Hong Kong was also ceded to Great Britain at this time.

The Treaty Port Era, also known as the Century of Humiliation , was perhaps too much for the country to bear. The weakened central government was beset by popular unrest, including the Taiping Rebellion (1850–64), which killed 20 million people, and the Boxer Rebellion (1899-1901), so-named for the secret society that led the movement, the Righteous and Harmonious Fists.

Eventually, the last Chinese emperor was deposed and a republic declared in 1911. Nevertheless, the government was too weak to impose its will, and was repeatedly challenged by warlords.

So as we approach the outbreak of the First World War in 1914, and the period covered by our visualization, we find China weakened internally by civil strife, and externally by Western powers.

The History of this Century-Old Pie Chart

Aspects of Principal Exports of Chinese Goods to Foreign Countries captures Chinese exports for 1914, and comes from The New Atlas and Commercial Gazetteer of China: A Work Devoted to Its Geography & Resources and Economic & Commercial Development .

Originally published in 1917 and edited by Edwin J. Dingle for the Far Eastern Geographical Establishment, the volume contains a wealth of data for the period. According to the book’s Preface, it “seeks to give all the information that is essential to the business-man in regard to a country… about which less is known than in regard to any similar area in the world.”

The visualization breaks down total Chinese exports for 1914 in haikwan taels (hk. tls.), a unit of silver currency used to collect tariffs. In 1907, one haikwan tael was worth $0.79 U.S. dollars.

Official figures come from the Chinese Maritime Customs Service . This was set up by foreign consuls after the First Opium War to collect tariffs to guarantee the payment of treaty indemnities.

Exports in 1914 represented 345 million hk. tls., a 14.4% decrease from 1913, likely owing to the outbreak of the First World War that same year.

Apart from “Other Metals and Minerals, Sundries, etc,” which served as a catch-all category, the largest categories were silks and teas of various types, representing 22.6% and 10.4% of total exports respectively.

Export Item Value (hk. tls.)
Animals, Living 5,270,910
Beancake 21,734,135
Bristles 4,347,582
Coal 8,624,805
Cotton Goods 2,012,128
Cotton, Raw 12,339,549
Eggs, Fresh, Preserved and Frozen 4,192,535
Fire crackers and fire works 2,435,841
Grasscloth 1,422,727
Mats and Matting 3,326,819
Medicines 2,672,341
Oil, Bean and Nutgalls 6,027,967
Oil, Groundnuts 2,414,900
Oil, Wood 3,736,275
Opium, Chinese 250,255
Other Metals and Minerals, Sundries, etc 74,449,181
Paper 2,864,983
Ramie 1,664,463
Seed, Rape 2,662,349
Seed, Sesamum 6,355,317
Sheep’s Wool 6,658,962
Silk Cocoons 2,078,721
Silk Piece Goods 10,841,472
Silk Pongees 4,720,914
Silk Waste 5,025,679
Silk, Raw, not Steam Filature 2,811,367
Silk, Raw, White, Steam Filature 37,384,485
Silk, Raw, Wild not Filatures 4,072,777
Silk, Raw, Yellow Steam Filatures 1,267,413
Silk, Raw, Yellow, (not Steam Filature) 4,439,073
Silk, Re-Reeled 5,552,127
Skins and Hides Undressed (Cow and Buffalo) 13,499,340
Skins, Goat Untanned 3,207,974
Straw Braid 1,104,310
Tallow, Animals and Vegetables 3,175,270
Tea Brick, Black 6,711,019
Tea Brick, Green 2,323,259
Tea, Black 16,203,547
Tea, Green 10,785,584
Timber 1,820,273
Tin, in Slabs 7,978,558
Vermicelli Macaroni 1,957,827
Wheat 3,850,179
Yellow Beans 19,005,709
Total 345,280,901

Below are some more details that emerge from this visualization.

All the Tea in China

The Chinese tea trade was the subject of another visualization in the Atlas. It shows that China had been steadily losing ground to British India. Between 1888-1892 Chinese exports to Great Britain were 242 million pounds against India’s 105 million pounds. By 1912-1913, India had surpassed China to export 279 million pounds against 198 million pounds.

In 1914, the majority of Chinese exports went to Russia, 902,716 piculs in all. A picul is equal to “as much as a man can carry on a shoulder-pole” or about 133 pounds.

The Silk Road to Profits

Silk has long been in demand in the West as a luxury good, giving its name to the overland trade route that connected East and West for centuries: the Silk Road.

In 1914, China was the largest producer and exporter of silks in the world. On an annual basis, China averaged 14 million pounds, compared to the number two spot, Japan, at 11 million pounds, and number three, Italy, at 9 million pounds. Together, these three controlled 81.7% of the global silk trade.

Chart showing China's silk supply in 1914

The Opium of the Masses?

The opium trade, the pretext that opened China to foreign trade, was still big money in 1914.

A total of 37 million hk. tls. were imported in 1914 from India, up 11.9% from 1908. This is actually down from a peak of 41 million hk. tls. in 1913.

Chart showing China's opium trade in the early 20th century

In 1907, China signed the Ten Year Agreement with India, which ultimately phased out the opium trade. By 1917 the trade was all but extinguished.

Back to the Future

The Aspects of Principal Exports of Chinese Goods to Foreign Countries is a far cry from the contemporary trade picture. China’s top export in 2021 was in the category “telephones for cellular networks or other wireless networks,” and was worth $147.1 billion .

But it’s worth noting that China today is a direct result of this period. The resentment created during the Century of Humiliation would eventually help lead to Mao Zedong, the Long March, and the establishment of the People’s Republic of China.

And in 1979, the Chinese central government would set up the first of their own “treaty ports,” in the form of special economic zones, places where foreign companies could set up shop. But this time, it wasn’t foreign powers who were making the rules.

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