The first-ever tweet on X was sent on March 21, 2006, at 9:50 pm

X (Twitter) started as a way to share short updates via text

What began as a way to share 140-character updates quickly grew into a vital platform for activism, politics, and pop culture. Hashtags, trending topics, and retweets—now common across the internet—originated on the platform.

X is a social media platform focused on real-time communication and content sharing

Users post and interact through short messages known as tweets. As of February 2025, X receives over 4.83 billion monthly visits, with users spending an average of 34 minutes daily on the platform.

The evolution of X, from startup to Musk-owned giant, reflects rapid tech shifts

Twitter began in 2006 as a side project and grew into a major global platform, widely used for news, activism, and political discourse. Despite mainstream success, it faced ongoing management turmoil, business struggles, and rising concerns over misinformation and user safety.

View the list of most followed users on X

X, formerly Twitter, may now face more competition from rival social networks than ever, but it also had over 650 million active users as of early 2025. Elon Musk, Barack Obama, and Cristiano Ronaldo led the list of most-followed accounts then.

See a visual representation Elon Musk's many tweets over a decade

Musk was known for tweeting often long before he purchased Twitter, later renaming the social network "X." One week in August 2024, Elon Musk posted 650 times. This data visualization shows an analysis of roughly 15,000 of his tweets from 2011 to 2021.

The rebrand to X was to make Twitter an all-in-one social media app

Elon Musk renamed the platform as part of his plan to create an app that goes beyond posts and tweets. The rebrand included a new name, logo, and vision for a platform that offers messaging, video, banking, shopping, and more.

X's bird logo cost just $15 and wasn't added until four years after launch

When Twitter launched in 2006, it featured green, slimy lettering and lacked the now-famous bird icon. The bird was adopted in 2010 and eventually became the platform's official logo—unofficially named Larry after NBA legend Larry Bird.

The history of Reddit, the front page of the internet

The hyperactive online forum and social media platform has transformed since 2006 from a simple link-sharing site to a behemoth in digital media. Topping off its ascendancy, Reddit went public on the New York Stock Exchange in 2024, solidifying its future amid a shifting technological climate. Dive into Reddit's nearly two decades of growth with this detailed timeline.

At 12 years old, Mark Zuckerberg built a messaging platform for his family called 'ZuckNet'

Mark's family used "ZuckNet" to communicate with each other in different rooms and Mark's dad's dental office, which was connected to their family home. ZuckNet ultimately didn't go anywhere, as AOL's instant messaging platform soon replaced it.

See Don Valentine's original 1977 memo for Sequoia's investment into Apple Computer

In honor of Apple's 50-year anniversary, Sequoia Capital recently posted a tweet on X (the social media platform formerly known as Twitter) with a photo of the original 1977 memo for Sequoia's investment in Apple.

Read Paul Graham’s initial post announcing YC’s first batch

In March 2005, Y Combinator cofounder Paul Graham announced the program that would become Y Combinator on his website.

The Nasdaq was founded in 1971, marking the debut of electronic trading

The Nasdaq stock exchange arguably invented electronic trading, making it a key part of fintech history. It's often used as a benchmark for how the tech industry is performing.

How the internet became the World Wide Web: a visualization

The internet was officially born in 1983 and had more than 150 million global users by 1997, creating an international web of seemingly separate networks. This data visualization shows the growth of the internet from 1997 to 2021. Data in this...

YouTube's first-ever video was nothing special

YouTube has grown into a cultural force in its two-plus decades of existence. Its beginnings, though, were modest, especially its first video: a 19-second clip about a visit to the San Diego Zoo. This brief resource explains the origins and longtail impact of "Me at the zoo," a simple video uploaded by Jawed Karim on April 23, 2005.

The first Winter X Games launched in 1997 at Big Bear Lake

The inaugural Winter X Games in 1997 introduced snowboarding, skiing, and snowmobile events—helping boost winter action sports’ popularity and paving the way for snowboarding’s inclusion in the 1998 Winter Olympics.

Less than half of TikTok's US users have posted a video

Like most platforms, content is driven by a small number of active users—in TikTok's case, 25% of accounts are responsible for an estimated 98% of content posted.

Memes can be traced back to the chain letter

Such intentional reshaping of communication transmissions dates back at least hundreds of years to the advent of the chain letter, a type of message that asks readers to create their own copy or at least forward it to others.

Are emojis real communication? And other questions for the experts

Emojis took off around 2009, after Apple's operating system for its defining iPhone became available in Japan. By 2012, a standardized set of emojis was released, and now seven in ten users feel a message without one of the 3,664 official emojis is lacking.

Read Linus Torvalds' commenting on his first posts about Linux in the comp.os.minix newsgroup

On August 1, 1991, he posted a request on what would be the first version of Linux, writing, "I'm doing a (free) operating system (just a hobby, won't be big and professional like gnu) for 386(486) AT clones. [...] I'd like any feedback on things people like/dislike in minix, as my OS resembles it somewhat."

The moment Bill Gates and the Rock announced the original Xbox at CES 2001

At CES 2001, Bill Gates and Dwayne “The Rock” Johnson took the stage to unveil the original Xbox. This memorable moment marked Microsoft’s entry into gaming and set the tone for its console brand.

Amazon sold its first book on April 3, 1995

Before selling everything on the internet, Amazon started as an online bookstore. The company's first customer was a man named John Wainright, who purchased "Fluid Concepts And Creative Analogies: Computer Models Of The Fundamental Mechanisms Of Thought" by Douglas Hofstadter. There's a building named after Wainwright on Amazon's Seattle campus.

The USSR launched the world's first satellite, Sputnik 1, into space in 1957

Sputnik, launched by the Soviet Union in 1957, became the world's first artificial satellite. While the technology itself was limited, the launch ignited the space race and signaled that intercontinental missiles and space technology had arrived faster than American leaders expected.

X-rays earned the very first Nobel Prize in physics for revealing hidden worlds

In 1895, Wilhelm Conrad Röntgen discovered X-rays, which could pass through solid objects and make unseen structures visible. Today’s X-ray tools continue to advance science and medicine, including capturing real-time images of proteins.

AlexNet was the AI tipping point that set the stage for ChatGPT

AlexNet is a neural network created in 2012 that laid the groundwork for modern AI models. Before AlexNet, the ideas behind neural networks existed, but the computational power to run them didn’t.

The first stablecoin pegged to the US dollar launched in 2014

That coin was Tether, also known as USDT. Other key dates in stablecoin history include Circle's launch of USDC in 2018, and, more recently, President Donald Trump's signing of the GENIUS Act in 2025.

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

The name 'Silicon Valley' arose from the founding of Shockley Semiconductor Laboratory in Fairchild Semiconductor in 1956-57, founded near Stanford University in Palo Alto

Graffiti dates back to at least ancient Pompeii, where citizens scrawled messages to one another on public walls

SpaceX's S-1 or 'prospectus' revealed many previously unknown details about the company, including its unprofitability despite doing $18.7B in revenue in 2025, exactly how many voting shares Elon Musk will have in the company (roughly 85%), and more.

Fast-casual restaurant Chili's is experiencing a resurgence, with its parent company recently reporting a nearly 32% increase in sales, thanks to passionate Gen Z fans on TikTok.

Memecoins are a type of cryptocurrency—a form of digital currency with a wide variety of uses—created around popular 'memes,' or viral internet jokes.

A 2019 Facebook event called on attendees to "Storm Area 51, They Can't Stop All of Us," resulting in countless memes, the creation of a music festival, and eventually the arrests of those who did try to approach the area.

This site reaches millions of visitors who are tired of AI chatbots and seeking human connection. Pretend to be an AI chatbot and ask questions, provide answers, and draw for people in real time.

Elk Cloner, the first computer virus to spread in public, was written as a practical joke by Richard Skrenta, a Pittsburgh high school student.

The first image of a black hole was captured by creating an Earth-sized virtual observatory from a network of eight radio telescopes.

Hear about the 250-year history of the United States Postal Service, complete with some of its strangest deliveries, important innovations, and the figures that made it an American institution.

English mathematician Ada Lovelace wrote the first computer algorithm a century before computers existed and hypothesized that computing devices would one day be able to compose music—foreseeing the generative AI systems of today.

Long before Major League Baseball began allowing instant replay for balls and strikes, an umpire reluctantly used the technology to determine whether a hit was a home run, a move that inadvertently ushered in a new era for the sport.

The Nasdaq's 'Magnificent 7' companies are responsible for roughly 40% of the Nasdaq 100 index's gains, while the remaining 93 companies account for the other 60%.

The first horror movie is believed to be George Méliès' 1986 short 'The Haunted Castle,' which pioneered the use of special effects

Before humans, the Soviet Union and the United States sent animals—including apes, dogs, and cats—to space during the Space Race.

See the most iconic photos from four decades of LIFE magazine

The first line of 'immortal' human cells, which can divide indefinitely and are used in scientific research, was nonconsensually taken from a Black woman.

US housing costs have risen by roughly 175% between 1991 and 2026—but a growing number of Gen Zers are becoming homeowners anyway. In 2025, 4% of homebuyers were Gen Z, up from 3% the year before.

The word 'jazz' evolved from 'jasm,' 19th-century American slang for 'energy'

As of 2025, the most cited papers in science include a review of graphene, methods to improve image recognition, streamlining electron density calculations, and optimizing protein studies.

After the Boston Tea Party, colonists switched to coffee, which became the main morning drink for revolutionaries.

The US Constitution is widely regarded as the longest-standing written national constitution still in force—see how it has influenced rights worldwide.

Iran's Revolutionary Guard Corps is independent of Iran's regular army and is one of the most powerful and influential military-political organizations in the Middle East.

See how Ebola tore through Guinea, Sierra Leone, and Liberia in 2014-2016.