Folks, let’s talk about something that’ll get your heart pounding.
Right now, as you’re reading this, a NASA spacecraft called Psyche is screaming past the planet Mars at nearly 12,000 miles per hour — and missing the surface by a hair. About 2,800 miles, to be exact. That’s roughly the distance from New York to Los Angeles. When you’re dealing with an entire planet, you’re basically shaving the atmosphere.
You might be thinking: Has NASA lost its mind? They spent all that time and money to launch a spacecraft just so it could do a fly-by of Mars?
Hold on. The story behind this maneuver is way more insane than any Hollywood blockbuster.
Cosmic Slingshot: How Mars Is Kicking Psyche Into High Gear
First, let’s get one thing straight. Psyche is not going to Mars. It’s headed for a bizarre metal world in the asteroid belt, also named Psyche, that orbits the Sun three times farther out than Earth does. Trying to get there with a straight shot would be a fuel nightmare. We’d never make it.
So NASA’s orbital engineers came up with an absolutely genius move: let Mars do the heavy lifting.
Here’s the idea. As Psyche swoops close to the Red Planet, Mars’s gravity grabs the spacecraft and flings it forward, like a slingshot. The planet’s gravity doesn’t just bend the spacecraft’s path — it gives it a free speed boost. In spaceflight lingo, this is a gravity assist. You let a planet act as a giant, cosmic gas station. No fuel required.
To nail this maneuver down to the millisecond, Psyche fired its thrusters back on February 23 for a 12-hour trajectory correction. Mission planning lead Sarah Bairstow said the computers onboard had already scripted every single move for May. Lindy Elkins-Tanton, the mission’s principal investigator, was even more blunt: “The number one priority is to get that kick from Mars and go. If the instruments pick up some bonus science along the way, that’s just gravy.”
The closest approach happened on May 15, 2026, at 3:28 p.m. Eastern, with every science instrument wide awake and snapping images of Mars. But here’s the really cool part — Psyche is approaching from the night side, so it’s seeing Mars as a thin crescent, not the big red disk you’re used to. Jim Bell, who runs the imaging team, summed it up perfectly: the photos are useful for calibrating the cameras, but they’re also “just plain pretty.”
What Is This $1 Quadrillion Asteroid, Anyway?
Alright, the spacecraft’s move is cool. But the destination is mind-blowing.
Asteroid 16 Psyche was first spotted back in 1852 by an Italian astronomer named Annibale de Gasparis. It sits in the main asteroid belt between Mars and Jupiter. It’s shaped like a giant potato — about 173 miles long and 144 miles wide.
But the shape isn’t the headline. This thing is made almost entirely of metal.
Using ultraviolet data from the Hubble Space Telescope, scientists have figured out that Psyche’s surface is loaded with iron and nickel, laced with traces of gold, platinum, and other precious metals. We’re talking about metal concentrations somewhere between 30 and 60 percent. Imagine an entire mountain range made of iron. Imagine a world that’s basically one giant, floating slab of ore.
So someone did the math: if you could haul all that metal back to Earth and sell it at today’s market prices, what would it be worth? Roughly $1 quadrillion. That’s a one with fifteen zeros. To wrap your head around it, that’s about 10,000 times the entire global economy. If you dropped that much gold on the market, you’d crash everything. Gold would become cheaper than gravel.
And no, NASA is not planning to land on Psyche, dig it up, or bring any of it home. Psyche is going to slip into orbit around the asteroid in 2029 and study it for two years with a whole suite of instruments. This isn’t a mining mission. It’s a time machine.
Something Far More Precious Than Gold: The Exposed Core of a Dead Planet
So if we’re not mining it, why in the world are we spending over a billion dollars to go stare at a lump of metal?
The answer is way cooler than any “trillion-dollar space rock” headline.
Scientists think 16 Psyche isn’t just some random chunk of metal. It’s the naked core of a failed planet — an ancient protoplanet that got its outer layers violently ripped off billions of years ago.
Here’s the picture: about 4.6 billion years ago, when the solar system was just getting started, space was full of baby planets smashing together. One of them was growing, pulling in rock and metal, forming a crust and a hot iron core, just like the Earth. But before it could finish, a series of catastrophic collisions blasted away all the rocky outer layers, leaving the heavy metal core exposed and drifting in the cold. That’s 16 Psyche.
If this theory is right, Psyche is the only planetary core humanity will ever get to visit. Earth’s own core is made of iron and nickel, but we will never, ever drill down to see it. Too deep, too hot, insanely high pressure. Psyche is nature’s gift — a planetary core that’s already been dissected and left out in space for us to study.
As Lindy Elkins-Tanton puts it, this is a window into how planets form and how their cores come together. It’s tied directly to that biggest of questions: how did Earth end up able to support life? The surface is just the skin. Psyche could show us the heart.
Three Years Down, Three More to Go
Psyche launched from Kennedy Space Center on October 13, 2023, riding a SpaceX Falcon Heavy rocket. The spacecraft is about the size of a van, and its engine is weirdly quiet — it uses solar electric propulsion. It takes xenon gas, runs it through Hall-effect thrusters, and spits out a gentle blue glow to push itself forward. Super efficient, but slow. That’s why the whole journey from Earth to the asteroid will take nearly six years.
From Earth to Mars to the asteroid belt, Psyche is traveling some 2.2 billion miles. It’s expected to arrive in August 2029.
Oh, and as a little side hustle, Psyche is testing some next-gen tech. It carries an experimental system called Deep Space Optical Communications — basically a space laser for sending data instead of old-school radio waves. Back in November 2023, it fired a laser signal to Earth from 10 million miles away. That was the first time anyone had ever demonstrated laser communication across deep space. So while Psyche is chasing a dead planet’s core, it’s also paving the way for the next era of cosmic internet.
Why We Go This Far
Honestly, 99 percent of people probably won’t even notice Psyche’s Mars flyby today. There’s no astronaut in danger, no explosions, and we won’t get a crisp picture of Mars for a few days. It’s quiet and patient, this kind of spaceflight.
But that quiet patience is exactly what makes it so human and so extraordinary.
We spent over a decade planning this. We committed more than a billion dollars. We launched a spacecraft into the void and told it to fly for six years, alone, just so it could go look at a 140-mile-wide metal rock. Why? Because we absolutely need to know what a planetary core looks like. What Earth’s childhood was like. How a searing ball of iron and nickel turned into this blue jewel that made us.
Back in 1969, humans first set foot on the Moon. Today, a machine named Psyche is racing toward a 4.6-billion-year-old remnant of a shattered world. Next year, it’ll be deep in the asteroid belt, closing the gap on that metal world.
See you in 2029. If you’re still reading our stories then, we’ll pick this right back up.