NASA's Psyche spacecraft, on a mission to explore a metal-rich asteroid, has sent back a striking timelapse video of its recent flyby of Mars. The spacecraft used the planet's gravity to adjust its trajectory toward its primary target, the asteroid Psyche, located in the main asteroid belt between Mars and Jupiter.
The video, composed of images taken by the spacecraft's onboard cameras, shows Mars rotating as Psyche approached and then receded from the red planet. The footage captures the planet's thin atmosphere, its polar ice caps, and the sprawling Valles Marineris canyon system, one of the largest known canyons in the solar system. The timelapse compresses about 20 minutes of real-time observation into a few seconds, offering a dynamic view of the Martian surface.
Psyche's flyby of Mars occurred on May 8, 2023, when the spacecraft passed within about 500 kilometers of the planet's surface. The maneuver was designed to use Mars's gravitational pull to accelerate Psyche and bend its path toward the asteroid belt, a technique known as a gravity assist. This approach saves fuel and reduces travel time, allowing the spacecraft to reach its destination more efficiently.
The mission, launched in October 2023 from NASA's Kennedy Space Center in Florida, is the first to study a metallic asteroid up close. The asteroid Psyche, which measures about 226 kilometers in diameter, is thought to be the exposed core of an early planetesimal—a building block of planets—that never fully formed. Scientists believe studying it could provide insights into the formation of Earth and other rocky planets.
During the Mars flyby, Psyche's instruments were also tested, including its magnetometer and gamma-ray spectrometer, which will be used to analyze the asteroid's composition. The spacecraft's cameras, part of the multispectral imager system, captured the images used in the timelapse. Engineers at NASA's Jet Propulsion Laboratory in Southern California are analyzing the data to ensure the instruments are functioning correctly before the spacecraft reaches its target.
The flyby also offered a rare opportunity to observe Mars from a unique perspective. The images show the planet's surface in visible and near-infrared light, revealing details about its geology and atmosphere. Scientists are particularly interested in the data on Mars's dust storms and cloud formations, which could help improve models of the planet's climate.
Psyche is now on track to arrive at the asteroid in August 2029, after a journey of about 3.6 billion kilometers. The spacecraft will spend about 26 months in orbit around the asteroid, mapping its surface, measuring its gravity field, and analyzing its composition. The mission is part of NASA's Discovery Program, which funds low-cost, focused science missions.
The timelapse video has been released by NASA as part of an update on the mission's progress. It marks a milestone in the spacecraft's journey and demonstrates the capabilities of its imaging system. The footage also serves as a reminder of the complex orbital mechanics involved in interplanetary travel.
Beyond the scientific objectives, the Psyche mission is testing new technologies, including a solar-electric propulsion system that uses Hall-effect thrusters. This system, which ionizes xenon gas to produce thrust, is more efficient than traditional chemical rockets and allows the spacecraft to travel farther with less fuel. The Mars flyby was a critical test of the propulsion system's ability to perform precise maneuvers.
The mission has also drawn attention for its public engagement efforts. NASA has provided regular updates on social media and through its website, sharing images and data from the spacecraft. The timelapse video is the latest in a series of visual highlights from the mission, which previously included images of Earth and the Moon taken shortly after launch.
As Psyche continues its journey, scientists are eagerly awaiting its arrival at the asteroid. The data collected could revolutionize our understanding of planetary formation and the early solar system. For now, the Mars flyby has provided a spectacular preview of what the spacecraft can achieve.