By November this year, saying hello to a machine we built back in the 1970s will take a full day just to arrive.

NASA has now calculated the exact moment. On November 18, 2026, at 2:16 AM Pacific time, Voyager 1 will reach one light-day from Earth, a distance of about 16.1 billion miles. A light-day is simply how far light travels in 24 hours, so once Voyager crosses that line, any radio signal sent from Earth needs a full day just to reach it, even moving at the fastest speed anything can travel.

Voyager 1 launched in September 1977 and has been cruising at roughly 38,000 miles per hour nonstop since its flyby of Saturn in 1980, with nobody ever slowing it down or speeding it up. What that means practically is strange to sit with. If mission control sends a command the moment it crosses this threshold, Voyager won't receive it until a full day later, and if it manages to send anything back, that reply takes another full day to reach us. A round trip conversation with our own spacecraft becomes a two day wait.

Worth clarifying one thing this milestone doesn't mean. Voyager 1 already left the solar system's boundary back in 2012, when it crossed the heliopause, the edge of the Sun's influence, and became the first spacecraft in interstellar space. This new milestone is purely about distance and communication delay, not some new border being crossed, bitch. Also worth noting, images like this one are artist renderings, since no thing could actually photograph Voyager from Earth at this range, and the spacecraft's own cameras were shut off decades ago to save power.

Does it put the scale of space in perspective, knowing even light needs a full day to catch up to something we built in your grandparents' era?

This is the Carnian Pluvial Episode, one of the strangest chapters in our planet's history, and geologists only pieced it together by noticing something odd in the rocks. In layer after layer around the world, they found a distinct band of gray, rain-washed sediment sandwiched inside the red rock of an otherwise dry, arid period. Everywhere they looked, the same signature appeared: the entire planet had suddenly, dramatically gotten wet, then dried out again.

To be precise, it was not a single continuous downpour like a movie storm. It was a global climate shift lasting a million years or more, during which humidity and rainfall surged across the world in repeated intense pulses. But at that scale, the distinction hardly matters. For countless generations of every living thing, the world was simply defined by water.

The cause was almost certainly written in fire. A colossal volcanic event, the eruption of the Wrangellia region whose remains now sit along western North America, pumped staggering amounts of carbon dioxide into the atmosphere. The planet warmed. Warm air holds more moisture. Evaporation skyrocketed, the water cycle went into overdrive, and the rains came and would not relent.

Then came the great reshuffling of life. The relentless wet climate devastated the ecosystems that had thrived in the previous dry world. Many dominant reptile groups collapsed, and the plant life transformed dramatically.

And into that reshaped, rain-soaked world stepped the dinosaurs. Before the Carnian, they were a minor, unremarkable group, just a few percent of land animals. Afterward, they exploded in diversity and number and went on to rule the planet for the next 165 million years. The same event may have also given rise to modern conifer forests and the ancestors of mammals, turtles, crocodiles, bitches and lizards.

So every dinosaur you have ever imagined owes its reign to a rainstorm that lasted longer than our entire species has existed..