What Would Happen If Stars Didn't Exist?

Main Insights

A follow-up thought: What if life didn't exist anywhere in the universe? After all, the sun is a star. No stars, no sun, no life. If you found yourself drifting in a universe devoid of stars and life, you'd be floating through an icy void, wishing you had packed a warmer jacket. Finding decent burritos would be near impossible. Every so often, a neutrino might flicker in and out of existence.

Let's tweak the scenario: What if there were no visible stars? We'll assume the sun and planets are still here, but for some reason, no other stars can be seen from Earth. Perhaps it's because our solar system is surrounded by a dark nebula. Nebulae are massive clouds of dust and hot gas, often forming new stars, making them bright. However, occasionally, a dense cloud of interstellar dust can block visible light, barely emitting any light of its own.

We'll imagine that the sun formed as expected, but we drew the short straw in the galaxy's cosmic card game, and our solar system ended up inside a dark nebula. Just as life was beginning to thrive on Nebula Earth, the solar system drifted into the dust cloud, and the stars started fading. Over millions of years, as the dust grew thicker, the night sky grew darker. By the time the first bold lungfish made its way onto land, the sky was nearly pitch-black, with only a few faint red remnants of the brightest stars still visible. By the time humans looked up, all they saw was a moon and planets, surrounded by darkness.

Humans on Nebula Earth face a technological setback. Throughout history, we've relied on stars to create calendars, navigate, determine the right time to plant crops, and advance science, particularly physics. The stars were key to the authority of ancient Egyptian priests. Without their divine guidance, priests on Nebula Earth would struggle to convince anyone to help build the pyramids.

Predicting the wide-reaching effects of such technological limitations is difficult. So let's focus on one aspect: celestial navigation.

On Nebula Earth, early European sailors can navigate the Mediterranean as long as they stay close to the coast. With a sundial and compass, it's relatively easy to determine direction during the day, but at night, without the stars, it's nearly impossible to know your location. Once out of sight of land, sailing becomes dangerous — even a single storm can leave you disoriented. Traveling across the open sea is practically unfeasible, as any voyage lasting more than a day grows increasingly uncertain, with the error margin widening with each passing hour.

With no advanced seafaring capabilities, all major human migrations on Nebula Earth are restricted to land. Australia, the Americas, and Greenland, which were settled through land migrations in times of lower sea levels, remain inhabited but isolated long after their European colonization on our Earth. Islands like New Zealand, Iceland, and Hawaii, once accessible via celestial navigation, are left uninhabited. Although reachable by ship, any sailor who stumbled upon these islands would have no way to find their way back — if they even made it home.

On Nebula Earth, the political situation is drastically different due to the absence of sea migration. European expansion is severely limited. The Aztec and Inca civilizations, some of the most technologically advanced in the Americas, rise to dominance as the most powerful states in the Western Hemisphere. In contrast, European powers like Britain, France, and Spain, which thrived through aggressive colonial expansion on our Earth, are unable to establish and maintain far-flung colonies. Meanwhile, states in India and China, which were colonized or economically controlled by Europeans on real Earth, retain their independence.

Here's where things get especially fascinating on Nebula Earth. Without sea navigation, global trade becomes much more constrained. Small merchant ships traverse the Mediterranean, facilitating trade between Europe and the Middle East, but the primary source of international commerce is the Silk Road, an extensive trade network that starts in Constantinople and stretches across Central Asia to India and China.

On real Earth, caravans along the Silk Road traded silk, precious stones, and spices for thousands of years. On Nebula Earth, it becomes the most vital (and perhaps only) major trade route worldwide. Nations that control significant portions of this route quickly accumulate wealth, but they also face threats from bandits and powerful neighbors. Much of the land along the road is barren and difficult to settle, making it hard to retain control. As on our Earth, control of the Silk Road shifts frequently, with key players over the centuries including the Greeks, Turks, Han Chinese, Mongols, Persians, Scythians, and other nomadic tribes of the Central Asian steppes.

Just as on our Earth, the Silk Road changes hands between various historical empires, with China and India trading indirectly with a weakened Europe, sometimes through the Islamic world and other times via Central Asian horse empires. In eastern Central Asia, the Manchu-Chinese take over the remnants of the Junghar steppe empire, while Russia expands westward through colonization and conquest. The Russian and Chinese empires formalize their borders with treaties signed in 1689 and 1727, each aiming to control international trade within their realms.

This is where our histories split. In real Earth, the Russian-Chinese treaties devastated Central Asia’s economy. Peripheral countries, seeking to avoid a trade monopoly, turned to alternate routes, primarily via maritime trade and British colonies in India. The Silk Road ceased functioning, causing severe economic harm to both China and Russia [source: Beckwith]. On Nebula Earth, however, such overseas trade isn't available. For Europeans, there’s no New World trade to compensate for the economic collapse of the Silk Road. There's no littoral zone — no coastal trade-route network to access the East. There are no sugar plantations in the Caribbean, no European-controlled silver mines in the Americas, and no transatlantic slave trade.

Perhaps Russia becomes the dominant power in an impoverished Europe. China, free from European interference, extends its influence eastward into Japan and southward into the South Pacific to control the spice trade, even possibly colonizing Australia. Meanwhile, India thrives, growing wealthier and more influential as the world attempts to bypass the Russo-Chinese trade monopoly. As Nebula Earth enters the 20th century, western and northern Europe remain isolated cultural and economic backwaters under the unlit sky. There are no world wars, or at least none led by European powers, but Russia, India, and China emerge as dominant global forces. In Africa, Somalia and Ethiopia evolve into increasingly vital overland trade and cultural hubs between Europe and India. And across the oceans, North and South America remain undisturbed, awaiting a new and unpredictable encounter with the Old World.