NASA's Psyche Mission Successfully Completes Mars Flyby
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NASA's Psyche spacecraft has successfully completed a gravity-assist flyby of Mars, gaining speed and adjusting its trajectory toward its target asteroid. The mission captured detailed images of the Martian surface during the close approach, which will help calibrate its instruments for the main science phase. The spacecraft is now on course to arrive at the metal-rich asteroid Psyche in August 2029.
Facts First
- The spacecraft performed a flyby of Mars on May 15, 2026, coming within 2,864 miles of the planet's surface.
- The Mars gravity assist provided a 1,000 mile-per-hour boost and shifted the spacecraft's orbital plane by approximately 1 degree.
- Psyche's instruments were powered up during the flyby to capture calibration data, including thousands of images of Mars.
- The spacecraft is now traveling toward the asteroid Psyche, a metal-rich body thought to be a partial planetary core.
- The mission is scheduled to arrive at its destination in August 2029, where it will orbit and map the asteroid.
What Happened
NASA's Psyche spacecraft completed a close approach of Mars on May 15, 2026, using the planet's gravity as a slingshot to increase its speed and reshape its orbit around the Sun. Navigators at NASA's Jet Propulsion Laboratory (JPL) in California set the spacecraft on a course 2,864 miles (4,609 km) from the Martian surface. Following the flyby, the flight team analyzed radio signals between the spacecraft and NASA's Deep Space Network (DSN) to confirm the new trajectory. Don Han, Psyche's navigation lead at JPL, confirmed that Mars provided a 1,000 mile-per-hour boost and shifted the spacecraft's orbital plane by approximately 1 degree relative to the Sun.
During the approach, Psyche's instruments—including imagers, magnetometers, and a gamma-ray and neutron spectrometer—were powered up for calibration. The multispectral imager instrument captured several views of Mars, including a crescent view, an enhanced-color view of the double-ring crater Huygens, a high-resolution view of the south polar cap, and an image showing wind streaks in the Syrtis Major region.
Why this Matters to You
This successful maneuver is a critical step in a six-year mission to explore a unique asteroid. The gravity assist allowed the spacecraft to adjust its course without using onboard propellant, conserving resources for its long journey. The calibration data gathered from Mars may help ensure the spacecraft's instruments are precisely tuned for their primary task: studying the asteroid Psyche, which could offer clues about the building blocks of early planets.
What's Next
The spacecraft will now resume using its solar-electric propulsion system to travel to the main asteroid belt between Mars and Jupiter. It is scheduled to arrive at the asteroid Psyche in August 2029. Upon arrival, the spacecraft will insert itself into orbit, map the asteroid, and gather science data. Calibration imaging of Mars will continue for the remainder of the month as the spacecraft recedes, and the mission team will use the dataset from the flyby to test early versions of image processing tools for the asteroid mission.