NASA’s Psyche Spacecraft Aces Its Mars Flyby and Slingshots Toward a Metal World
NASA’s Psyche spacecraft used a flyby of Mars as a gravity-assist slingshot toward the metal-rich asteroid Psyche, calibrating its instruments and capturing a month-long time-lapse of the Red Planet along the way.
ScienceGNGV Editorial Team5 min read
NASA’s Psyche mission has pulled off a flawless piece of cosmic choreography, using the planet Mars as a free boost on its way to one of the strangest destinations in the solar system. In a maneuver reported by ScienceDaily in late July 2026, the spacecraft swept past Mars on May 15, 2026, coming within about 2,864 miles (4,609 kilometers) of the surface and borrowing the planet’s gravity to accelerate and reset its trajectory, all without spending a drop of propellant.
That gravity assist was mission-critical, bending Psyche’s path toward its true target: 16 Psyche, a metal-rich asteroid orbiting in the main belt between Mars and Jupiter, where the spacecraft is due to arrive in the summer of 2029. But the team turned the flyby into far more than a slingshot. They used the close pass to rehearse and calibrate Psyche’s scientific instruments, putting its multispectral imager, magnetometer, and gamma-ray and neutron spectrometer through their paces on a real planet.
The results were a delight for scientists and space fans alike. Psyche’s cameras captured a month-long time-lapse of its approach and departure, revealing wind-shaped craters, the south polar ice cap and the great Huygens crater, and even spotting the two tiny Martian moons, Phobos and Deimos. The magnetometer measured the planet’s magnetic bow shock, and the spectrometer successfully detected neutrons streaming from Mars. “The mission’s imager, magnetometer, and gamma-ray and neutron spectrometer teams worked overtime to make full use of this planetary encounter,” said principal investigator Lindy Elkins-Tanton of UC Berkeley, with Bob Mase serving as project manager at NASA’s Jet Propulsion Laboratory.
When Psyche finally reaches its namesake asteroid, it will study a world thought to be unusually rich in metal, possibly the exposed core of an early planetary building block, offering a glimpse into the hidden interiors of rocky worlds like Earth. For now, the successful Mars flyby is a quiet triumph of navigation and teamwork, and a reminder of how gracefully human ingenuity can ride the gravity of other planets across the vast distances of space.
