2025 : A Space Odyssey

A scrollytelling build about satellites, exoplanets, and the ISS

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A Voyage Beyond:
How Humanity’s Space Ambitions Circle Back to Earth

Over decades, nations poured their resources into missions that charted lunar surfaces and searched Martian soil for signs of life. These were not just scientific feats; they were declarations of our will to explore, to push boundaries, to belong to more than one world. But not all of space exploration looks like rockets and rovers.

As ambitions expanded outward, a quieter revolution unfolded above our heads. Thousands of satellites began populating Earth’s orbit; launched not to touch other worlds, but to transform our own. They form shifting constellations around the planet, invisible yet indispensable. A choreography of data, communication, surveillance, and discovery. The same drive that sent probes to Mars also gave birth to this dense orbital hive, where technology races to keep up with our earthly needs. And just as the Moon missions showed us what’s possible beyond Earth, the satellites show us what’s possible because of it. The race to space didn’t just lead us to Mars; it enveloped Earth in a dense mesh of satellites, each one launched with a specific mission, a specific need, a specific purpose.

Today, if you could step back far enough, Earth would shimmer with artificial stars.

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Satellites now surround the planet in structured orbits—Low Earth, Medium, Geostationary, and beyond—forming rings of data, communication, and surveillance. Their presence is not random. It reflects our priorities, dependencies, and geopolitics. Some deliver internet to remote areas. Others track climate change, guide GPS navigation, or beam television signals across oceans. But the question isn’t just where they are. It’s why they’re there—and who put them there.

Communication satellites dominate, a testament to our hyperconnected world. Earth observation follows, driven by both curiosity and crisis—monitoring deforestation, glacial melt, and urban expansion. Technology development, navigation systems, and space science also carve out their own slices of orbital real estate.

And then, there’s the global footprint. While the United States still leads the charge, countries like China, Russia, the UK, Japan, and India have made substantial investments. Smaller nations are also rising, often through multinational partnerships that reflect a more democratized space economy.

Space exploration is no longer confined to lunar landers or Martian rovers. It's here—buzzing quietly above us, reshaping life below.

Exoplanets
in
Deep Space

While thousands of satellites monitor Earth and explore our solar system, some point their gaze much farther. Space telescopes, themselves sophisticated satellites like Kepler and TESS, are designed for a singular, ambitious purpose: finding planets beyond our own solar system – exoplanets.

The Challenge of Detection

Exoplanets are incredibly far away and orbit stars vastly brighter than themselves. Imagine trying to spot a firefly next to a searchlight miles away! This makes seeing them directly nearly impossible. In fact, direct imaging accounts for only about 3% of discoveries.

How faint are they compared to their star? Often billions of times dimmer.

The Transit Method

So, how do we find them? Mostly through indirect methods. The most successful technique so far is the Transit Method. When an exoplanet passes directly between its star and Earth (a transit), it blocks a tiny fraction of the star's light, causing a periodic dimming we can detect.

Discovery Methods - The Big Picture

While the Transit method dominates, scientists employ several clever techniques to find these distant worlds. Each method has its strengths and tends to find different types of planets. This chart shows the breakdown by method.

Exoplanet Discovery Methods

Exoplanet Zoo

Each bubble here represents a confirmed exoplanet. The size relates to the planet's radius, and the color indicates its estimated equilibrium temperature. Hover over a bubble for details.

This gives a sense of the variety and sheer number discovered so far.

Exoplanets - Distance from Sun

This view shows discovered exoplanets (from our sample of 1000) plotted by their distance from our Sun in parsecs (pc). The Sun is at the center, and the concentric rings help gauge distances. Size and color represent radius and temperature as before.

Notice how many discoveries are relatively "close" cosmically, but telescopes like Kepler pushed our reach further out. Hover for details.

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The First 50 Expeditions

A Global Laboratory

The International Space Station (ISS) is the largest orbiting laboratory ever built, bringing together international flight crews, multiple launch vehicles, globally distributed research, operations, training, engineering, and development facilities, communications networks, and the international scientific research community.

This visualization shows the timeline for the first 50 expeditions.

Reading the Chart: Expeditions

The timeline starts with Expedition 1 in November 2000 at the top and progresses clockwise through Expedition 50.

Each numbered point on the outer ring marks the start date of an expedition.

Reading the Chart: Crew

Concentric rings moving inward represent crew member slots. Teal diamonds ◆ mark the Expedition Commander, while pink circles ● represent Crew Members.

Lines connect crew members to the center.

Focus on Expedition 1

Expedition 1 began on November 2, 2000, commanded by William Shepherd, with crew members Yuri Gidzenko and Sergei Krikalev. This marked the start of continuous human presence on the station.

Experienced Flyers

The number of rings around a crew member's dot indicates the total number of *previous* expeditions they flew on within these first 50 missions.

For example, look at Sergei Krikalev on Expedition 11 (April 2005). The single ring indicates he had flown on one previous mission shown here (Expedition 1).

Some astronauts, like Gennady Padalka (Exp 32 Commander) and Peggy Whitson (Exp 50 Commander), completed multiple missions during this period.

A Continuous Endeavor

These first 50 expeditions represent years of continuous human operation, international collaboration, and scientific discovery aboard the ISS, paving the way for future exploration.

Explore the Expeditions

Scroll back through the steps or take a moment to explore the details of each expedition and the dedicated crews who served aboard the International Space Station.

How Curiosity Launched Thousands of Rockets

Early humans have always been seethed with curiosity about the world around them. With the innate need to have answers to questions, we’ve known no bounds in the discovery and exploration of all things around us.
The mid-20th century was a pivotal moment in the history of space exploration — the Space Race between the United States and the Soviet Union gave rise to extensive missions and milestones. In the decades that followed, space exploration turned into an international expedition. Countries — large, small, developed, and developing — realized that investing in space was not just about global prestige, it was about innovation, solving problems, and potentially finding another home.

Each country’s footprint beyond our atmosphere portrays global ambition, scientific capability, and even geopolitical status. As we zoom into this data, we get to see why and where space investment is most profitable. Space is no longer just for a few elite organizations or countries, it is the shared prospect of all of humanity.

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Earth to Moon & Mars Missions

Having established a foothold in Earth orbit, humanity's gaze turned further outward. The Moon, our closest celestial neighbor, became the first target...
Over time, the focus shifted to sending humans to set foot on other celestial objects, to explore, and learn more. This is how the Moon became the center of focus, with Martian missions catching up closely after it. The Moon symbolized victory in the beginning. The Apollo missions in the 1960s were designed for speed, with the goal to beat the Soviet Union and hoist the American flag on the Moon. But after the initial spark of success, lunar missions faded for a while. For decades after the Moon landing, we saw it as a horizon we had already taken over. On the other hand, Mars was a destination with a lot of potential to be explored. Yet, both of these have come back into focus in the recent years.

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Our home and Beyond

As we trace our journey from Moon landings to Mars rovers, from the twinkling hum of satellites to the quiet mysteries of distant exoplanets, one truth becomes clear, space exploration reflects who we are as humans: driven by ambition, guided by curiosity, and deeply rooted in our desire to connect. The International Space Station taught us cooperation beyond borders; satellites made Earth visible in new ways; the search for exoplanets sparked questions about life beyond. Together, these milestones reveal that space is more than just a frontier; it is a lens through which we better understand ourselves and our place in the universe. And through it, we’re not only exploring the universe, but also redefining what it means to be human on this fragile, shared planet we call home.