Connect with us

Misc

As the Worlds Turn: Visualizing the Rotation of Planets

Published

on

As the Worlds Turn: Visualizing the Rotations of Planets

The rotation of planets have a dramatic effect on their potential habitability.

Dr. James O’Donoghue, a planetary scientist at the Japanese space agency who has the creative ability to visually communicate space concepts like the speed of light and the vastness of the solar system, recently animated a video showing cross sections of different planets spinning at their own pace on one giant globe.

Cosmic Moves: The Rotation of the Planets

Each planet in the solar system moves to its own rhythm. The giant gas planets (Jupiter, Saturn, Uranus, and Neptune) spin more rapidly on their axes than the inner planets. The sun itself rotates slowly, only once a month.

PlanetRotation Periods (relative to stars)
Mercury58d 16h
Venus243d 26m
Earth23h 56m
Mars24h 36m
Jupiter9h 55m
Saturn10h 33m
Uranus17h 14m
Neptune16h

The planets all revolve around the sun in the same direction and in virtually the same plane. In addition, they all rotate in the same general direction, with the exceptions of Venus and Uranus.

In the following animation, their respective rotation speeds are compared directly:

The most visually striking result of planetary spin is on Jupiter, which has the fastest rotation in the solar system. Massive storms of frozen ammonia grains whip across the surface of the gas giant at speeds of 340 miles (550 km) per hour.

Interestingly, the patterns of each planet’s rotation can help in revealing whether they can support life or not.

Rotation and Habitability

As a fish in water is not aware it is wet, so it goes for humans and the atmosphere around us.

New research reveals that the rate at which a planet spins is an essential component for supporting life. Not only does rotation control the length of day and night, bit it influences atmospheric wind patterns and the formation of clouds.

The radiation the Earth receives from the Sun concentrates at the equator. The Sun heats the air in this region until it rises up through the atmosphere and moves towards the poles of the planet where it cools. This cool air falls through the atmosphere and flows back towards the equator.

This process is known as a Hadley cell, and atmospheres can have multiple cells:

Hadley Cells

A planet with a quick rotation forms Hadley cells at low latitudes into different bands that encircle the planet. Clouds become prominent at tropical regions, which reflect a proportion of the light back into space.

For a planet in a tighter orbit around its star, the radiation received from the star is much more extreme. This decreases the temperature difference between the equator and the poles, ultimately weakening Hadley cells. The result is fewer clouds in tropical regions available to protect the planet from intense heat, making the planet uninhabitable.

Slow Rotators: More Habitable

If a planet rotates slower, then the Hadley cells can expand to encircle the entire world. This is because the difference in temperature between the day and night side of the planet creates larger atmospheric circulation.

Slow rotation makes days and nights longer, such that half of the planet bathes in light from the sun for an extended period of time. Simultaneously, the night side of the planet is able to cool down.

This difference in temperature is large enough to cause the warm air from the day side to flow to the night side. This movement of air allows more clouds to form around a planet’s equator, protecting the surface from harmful space radiation, encouraging the possibility for the right conditions for life to form.

The Hunt for Habitable Planets

Measuring the rotation of planets is difficult with a telescope, so another good proxy would be to measure the level of heat emitted from a planet.

An infrared telescope can measure the heat emitted from a planet’s clouds that formed over its equator. An unusually low temperature at the hottest location on the planet could indicate that the planet is potentially a habitable slow rotator.

Of course, even if a planet’s rotation speed is just right, many other conditions come into play. The rotation of planets is just another piece in the puzzle in identifying the next Earth.

Subscribe to Visual Capitalist

Thank you!
Given email address is already subscribed, thank you!
Please provide a valid email address.
Please complete the CAPTCHA.
Oops. Something went wrong. Please try again later.

Comments

Technology

50 Years of Gaming History, by Revenue Stream (1970-2020)

Visualizing 50 years of gaming history, from the first wave of arcades and home consoles to a tsunami of mobile gaming.

Published

on

Game-Revenue-Timeline---Shareable-Updated

50 Years of Gaming History, by Revenue Stream (1970-2020)

View a more detailed version of the above by clicking here

Every year it feels like the gaming industry sees the same stories—record sales, unfathomable market reach, and questions of how much higher the market can go.

We’re already far past the point of gaming being the biggest earning media sector, with an estimated $165 billion revenue generated in 2020.

But as our graphic above helps illustrate, it’s important to break down shifting growth within the market. Research from Pelham Smithers shows that while the tidal wave of gaming has only continued to swell, the driving factors have shifted over the course of gaming history.

1970–1983: The Pre-Crash Era

At first, there was Atari.

Early prototypes of video games were developed in labs in the 1960s, but it was Atari’s release of Pong in 1972 that helped to kickstart the industry.

The arcade table-tennis game was a sensation, drawing in consumers eager to play and companies that started to produce their own knock-off versions. Likewise, it was Atari that sold a home console version of Pong in 1975, and eventually its own Atari 2600 home console in 1977, which would become the first console to sell more than a million units.

In short order, the arcade market began to plateau. After dwindling due to a glut of Pong clones, the release of Space Invaders in 1978 reinvigorated the market.

Arcade machines started to be installed everywhere, and new franchises like Pac-Man and Donkey Kong drove further growth. By 1982, arcades were already generating more money than both the pop music industry and the box office.

1985–2000: The Tech Advancement Race

Unfortunately, the gaming industry grew too quickly to maintain.

Eager to capitalize on a growing home console market, Atari licensed extremely high budget ports of Pac-Man and a game adaptation of E.T. the Extra Terrestrial. They were rushed to market, released in poor quality, and cost the company millions in returns and more in brand damage.

As other companies also looked to capitalize on the market, many other poor attempts at games and consoles caused a downturn across the industry. At the same time, personal computers were becoming the new flavor of gaming, especially with the release of the Commodore 64 in 1982.

It was a sign of what was to define this era of gaming history: a technological race. In the coming years, Nintendo would release the Nintendo Entertainment System (NES) home console in 1985 (released in Japan as the Famicom), prioritizing high quality games and consistent marketing to recapture the wary market.

On the backs of games like Duck Hunt, Excitebike, and the introduction of Mario in Super Mario Bros, the massive success of the NES revived the console market.

Estimated Total Console Sales by Manufacturer (1970-2020)

ManufacturerHome Console salesHandheld Console SalesTotal Sales
Nintendo318 M430 M754 M
Sony445 M90 M535 M
Microsoft149 M-149 M
Sega64-67 M14 M81 M
Atari31 M1 M32 M
Hudson Soft/NEC10 M-10 M
Bandai-3.5 M3.5 M

Source: Wikipedia

Nintendo looked to continue its dominance in the field, with the release of the Game Boy handheld and the Super Nintendo Entertainment System. At the same time, other competitors stepped in to beat them at their own game.

In 1988, arcade company Sega entered the fray with the Sega Mega Drive console (released as the Genesis in North America) and then later the Game Gear handheld, putting its marketing emphasis on processing power.

Electronics maker Sony released the PlayStation in 1994, which used CD-ROMs instead of cartridges to enhance storage capacity for individual games. It became the first console in history to sell more than 100 million units, and the focus on software formats would carry on with the PlayStation 2 (DVDs) and PlayStation 3 (Blu-rays).

Even Microsoft recognized the importance of gaming on PCs and developed the DirectX API to assist in game programming. That “X” branding would make its way to the company’s entry into the console market, the Xbox.

2001–Present: The Online Boom

It was the rise of the internet and mobile, however, that grew the gaming industry from tens of billions to hundreds of billions in revenue.

A primer was the viability of subscription and freemium services. In 2001, Microsoft launched the Xbox Live online gaming platform for a monthly subscription fee, giving players access to multiplayer matchmaking and voice chat services, quickly becoming a must-have for consumers.

Meanwhile on PCs, Blizzard was tapping into the Massive Multiplayer Online (MMO) subscription market with the 2004 release of World of Warcraft, which saw a peak of more than 14 million monthly paying subscribers.

All the while, companies saw a future in mobile gaming that they were struggling to tap into. Nintendo continued to hold onto the handheld market with updated Game Boy consoles, and Nokia and BlackBerry tried their hands at integrating game apps into their phones.

But it was Apple’s iPhone that solidified the transition of gaming to a mobile platform. The company’s release of the App Store for its smartphones (followed closely by Google’s own store for Android devices) paved the way for app developers to create free, paid, and pay-per-feature games catered to a mass market.

Now, everyone has their eyes on that growing $85 billion mobile slice of the gaming market, and game companies are starting to heavily consolidate.

Major Gaming Acquisitions Since 2014

DateAcquirerTarget and SectorDeal Value (US$)
Apr. 2014FacebookOculus - VR$3 Billion
Aug. 2014AmazonTwitch - Streaming$970 Million
Nov. 2014MicrosoftMojang - Games$2.5 Billion
Feb. 2016Activision BlizzardKing - Games$5.9 Billion
Jun. 2016TencentSupercell - Games$8.6 Billion
Feb. 2020Embracer GroupSaber Interactive - Games$525 Million
Sep. 2020MicrosoftZeniMax Media - Games$7.5 Billion
Nov. 2020Take-Two InteractiveCodemasters - Games$994 Million

Console makers like Microsoft and Sony are launching cloud-based subscription services even while they continue to develop new consoles. Meanwhile, Amazon and Google are launching their own services that work on multiple devices, mobile included.

After seeing the success that games like Pokémon Go had on smartphones—reaching more than $1 billion in yearly revenue—and Grand Theft Auto V’s record breaking haul of $1 billion in just three days, companies are targeting as much of the market as they can.

And with the proliferation of smartphones, social media games, and streaming services, they’re on the right track. There are more than 2.7 billion gamers worldwide in 2020, and how they choose to spend their money will continue to shape gaming history as we know it.

Subscribe to Visual Capitalist

Thank you!
Given email address is already subscribed, thank you!
Please provide a valid email address.
Please complete the CAPTCHA.
Oops. Something went wrong. Please try again later.

Continue Reading

Green

Which Countries are Mapping the Ocean Floor?

We know more about the surface of Mars than we do on the ocean floor. Which countries are mapping the ocean floor, and what’s still unknown?

Published

on

mapping the ocean floor

Which Countries are Mapping the Ocean Floor?

Our vast and complex planet is becoming less mysterious with each passing day.

Consider the following:

  • Thousands of satellites are now observing every facet of our planet
  • Around three-quarters of Earth’s land surface is now influenced by human activity
  • Aircraft-based LIDAR mapping is creating new models of the physical world in staggering detail

But, despite all of these impressive advances, our collective knowledge of the ocean floor still has some surprising blind spots.

Today’s unique map from cartographer Andrew Douglas-Clifford (aka The Map Kiwi) focuses on ocean territory instead of land, highlighting the vast areas of the ocean floor that remain unmapped. Which countries are exploring their offshore territory, and how much of the ocean floor still remains a mystery to us? Let’s dive in.

What Do We Know Right Now?

Today, we have a surprisingly incomplete picture of what lies beneath the waves. In fact, if you were to fly from Los Angeles to Sydney, the bulk of your journey would take place over territory that is mapped in only the broadest sense.

Most of what we know about the ocean floor’s topography was pieced together from gravity data gathered by satellites. While useful as a starting point, the resulting spatial resolution is about two square miles (5km). By comparison, topographic maps of Mars and Venus have a resolution that’s 50x more detailed.

As the map above clearly illustrates, only a few large pieces of the ocean have been mapped—and not surprisingly, many of these higher resolution portions lie along the world’s shipping lanes.

Another way to see this clear difference in resolution is through Google Maps:

As you can see above, these shipping lanes running through the Pacific Ocean have been mapped at a higher resolution that the surrounding ocean floor.

The Countries Mapping the Ocean Floor

The closer an area is to a population center, the higher the likelihood it has been mapped. That said, many countries still have a long way to go before they have a clear picture of their land beneath the waves.

Here is a snapshot of how far along countries are in their subsea mapping efforts:

Countries/territoriesSize of Exclusive Economic Zone* (EEZ)Percentage of EEZ mapped
Japan1,729,501 mi² (4,479,388 km²)97.7%
United Kingdom2,627,651 mi² (6,805,586 km²)90.6%
Norway920,922 mi² (2,385,178 km²)81.9%
New Zealand1,576,742 mi² (4,083,744 km²)74.0%
United States4,382,645 mi² (11,351,000 km²)69.9%
Australia3,283,933 mi² (8,505,348 km²)64.9%
Iceland291,121 mi² (754,000 km²)49.9%
South Africa592,874 mi² (1,535,538 km²)39.5%
Canada2,161,815 mi² (5,599,077 km²)38.8%
Samoa49,401 mi² (127,950 km²)34.6%
South Korea183,579 mi² (475,469 km²)28.3%
Taiwan32,135 mi² (83,231 km²)26.3%
Argentina447,516 mi² (1,159,063 km²)22.6%
Cook Islands756,770 mi² (1,960,027 km²)29.0%
Phillippines614,203 mi² (1,590,780 km²)16.7%
China338,618 mi² (877,019 km²)11.4%
Madagascar473,075 mi² (1,225,259 km²)5.5%
Bangladesh45,873 mi² (118,813 km²)3.3%
Thailand115,597 mi² (299,397 km²)1.5%

*An exclusive economic zone (EEZ) is the sea zone stretching 200 nautical miles (nmi) from the coast of a state.

Japan and the UK, which have the 5th and 8th largest EEZs respectively, are the clear leaders in mapping their ocean territory.

Piecing Together the Puzzle

Sometimes tragedy can have a silver lining. By the time the search for Malaysia Airlines Flight 370 concluded in 2014, scientists had gained access to more than 100,000 square miles of newly mapped sections of the Indian Ocean.

Of course, it will take a more systematic approach and sustained effort to truly map the world’s ocean floors. Thankfully, a project called Seabed 2030 has the ambitious goal of mapping the entire ocean floor by 2030. The organization is collaborating with existing mapping initiatives in various regions to compile bathymetric information (undersea map data).

It’s been said without hyperbole that we know more about the surface of Mars than we do about our own planet’s seabed, but thanks to the efforts of Seabed 2030 and other initiatives around the world, puzzle pieces are finally falling into place.

Subscribe to Visual Capitalist

Thank you!
Given email address is already subscribed, thank you!
Please provide a valid email address.
Please complete the CAPTCHA.
Oops. Something went wrong. Please try again later.

Continue Reading

Subscribe

Join the 220,000+ subscribers who receive our daily email

Thank you!
Given email address is already subscribed, thank you!
Please provide a valid email address.
Please complete the CAPTCHA.
Oops. Something went wrong. Please try again later.

Popular