A window into the violent collisions that shaped our solar system
Somewhere between the familiar red face of Mars and the cold outer reaches of the asteroid belt, a small human-made vessel is borrowing gravity itself to travel further than its own engines could carry it. NASA's Psyche spacecraft, launched in 2023, is using Mars as a cosmic pivot point this week — a maneuver that will redirect it toward an ancient metallic asteroid believed to be the exposed iron-nickel core of a long-dead planet. Valued at an almost incomprehensible $10 quintillion, the asteroid Psyche is less a treasure chest than a time capsule, offering science a rare glimpse into the violent, formative moments that built the worlds of our solar system.
- A spacecraft with no hope of reaching its destination on its own fuel is swinging past Mars this week, borrowing the planet's gravitational pull to fling itself deeper into the solar system.
- The target — an asteroid composed largely of iron, nickel, and traces of gold — contains more metal than humanity has extracted across its entire history, a fact that has captured imaginations far beyond the scientific community.
- The mission's true urgency is scientific: if Psyche is indeed a planetary core laid bare by ancient collisions, it may answer foundational questions about how Earth and other rocky worlds were assembled billions of years ago.
- No mining equipment is aboard — this is a mission of observation, not extraction — but the data Psyche gathers could lay the groundwork for a future in which asteroid resources are no longer the stuff of science fiction.
- After the Mars flyby, the probe will travel onward for years, arriving at the asteroid in 2029 to spend months in orbit mapping, measuring, and transmitting its findings across millions of miles back to Earth.
NASA's Psyche spacecraft is passing Mars this week — not to study it, but to use it. In a maneuver as elegant as it is practical, the probe will swing close enough to Mars to let the planet's gravity bend and accelerate its path, redirecting it toward a far stranger destination: a metal-rich asteroid orbiting between Mars and Jupiter, estimated to be worth around $10 quintillion.
Unlike most planetary missions driven by the search for water or signs of life, Psyche is chasing something rarer — what scientists believe is the exposed metallic core of a planet that never fully formed, or was stripped bare by ancient, catastrophic collisions. The asteroid is thought to be composed largely of iron and nickel, threaded with gold and other precious metals, holding more raw material than all of human mining history combined.
The gravity assist is a necessity, not a luxury. The spacecraft lacks the fuel to reach the asteroid belt on its own, so it borrows momentum from Mars — a technique NASA has refined over decades, costing nothing in propellant and gaining everything in velocity and direction. After this milestone, Psyche will continue its outward journey, arriving at the asteroid in 2029.
Once in orbit, the probe will spend months mapping the surface, analyzing composition, and measuring magnetic fields — transmitting data across millions of miles to scientists who hope it will rewrite theories of planetary formation. The dollar figure attached to the asteroid draws headlines, but the deeper prize is understanding what lies beneath the crusts of worlds like our own.
Psyche carries no mining equipment and will return no material to Earth. Yet the knowledge it gathers may one day inform whether harvesting metals from asteroids is a viable path forward — transforming what is now serious speculation into something closer to engineering reality.
NASA's Psyche spacecraft is making its approach to Mars this week, not to land or study the planet itself, but to use it as a cosmic slingshot. The probe will swing past Mars at close range, letting the planet's gravity bend its trajectory and accelerate it toward a destination far more exotic: a metal-rich asteroid in the outer solar system that scientists estimate could be worth around $10 quintillion.
The Psyche mission represents an unusual chapter in space exploration. Rather than chasing water, organic molecules, or signs of past life—the usual drivers of planetary science—NASA is sending a robotic explorer to study what appears to be the exposed metallic core of a dead planet. The asteroid itself, also called Psyche, orbits between Mars and Jupiter in the asteroid belt. It is thought to be composed largely of iron and nickel, with traces of gold and other precious metals woven through its structure. If that composition is correct, the asteroid contains more metal than has ever been mined in human history.
The gravity assist maneuver at Mars is a practical necessity. The spacecraft cannot reach the asteroid on its own fuel reserves. By passing close to Mars, Psyche will be pulled by the planet's gravitational field, which will alter the probe's velocity and direction without requiring a single drop of propellant. It is a technique NASA has used for decades—a way to borrow momentum from one celestial body to reach another. In this case, the assist will redirect Psyche toward its target in the outer reaches of the solar system, where it will arrive years from now to begin its scientific investigation.
What makes this mission scientifically compelling is not the dollar value of the metals, though that number captures public imagination. Rather, scientists believe that studying Psyche could reveal how planetary cores form and what lies beneath the rocky surfaces of terrestrial worlds like Earth. The asteroid may be a window into the violent collisions and planetary assembly that shaped our solar system billions of years ago. Understanding its composition, structure, and magnetic properties could reshape theories about how planets develop and evolve.
The mission also carries implications for humanity's future in space. As Earth's mineral resources become scarcer and more difficult to extract, the idea of harvesting metals from asteroids has shifted from science fiction to serious engineering discussion. Psyche itself is not a mining target—the spacecraft carries no equipment to extract or return material. But the data it gathers could inform future missions designed to study asteroid composition and feasibility for resource extraction. Whether asteroid mining ever becomes economically viable remains an open question, but Psyche is gathering the foundational knowledge that such an industry would need.
The spacecraft has been traveling for years already, having launched in 2023. The Mars gravity assist is a milestone in a long journey. After the maneuver, Psyche will continue its voyage outward, eventually arriving at the asteroid in 2029. There, it will enter orbit and spend months mapping the surface, measuring the asteroid's magnetic field, and analyzing its composition with a suite of scientific instruments. The data will be transmitted back to Earth across millions of miles of space, where scientists will spend years interpreting what the asteroid reveals about the early solar system and the hidden cores of worlds.
A Conversa do Hearth Outra perspectiva sobre a história
Why does NASA need to use Mars as a gravity assist? Why not just send the probe directly?
The spacecraft doesn't have enough fuel to reach the asteroid on its own. Mars's gravity acts like a free boost—it bends the probe's path and accelerates it without burning propellant. It's borrowing momentum from a planet that's already there.
And the asteroid itself—is NASA actually planning to mine it someday?
Not with this mission. Psyche is a science probe, not a mining operation. But the data it collects about composition and structure will be the foundation for any future mining effort. Right now, we're gathering the knowledge.
What's the scientific value beyond the metals? Why does it matter what's inside an asteroid?
Because that asteroid may be the exposed core of a planet that was destroyed billions of years ago. Studying it tells us how planetary cores form, what Earth's core might look like if we could see it, how planets assemble from collisions and accretion. It's a window into planetary birth.
So the $10 quintillion figure—is that just marketing, or does it mean something real?
It's real in the sense that if you could extract and sell those metals, that's what they'd be worth at current prices. But it's also somewhat abstract. The asteroid is too far away, too massive to move, and we have no technology to mine it. The number captures attention, but the science is what matters.
When does Psyche actually arrive at the asteroid?
2029. The spacecraft has been traveling since 2023. This Mars flyby is a waypoint—a necessary maneuver to redirect the probe toward its final destination in the outer solar system.