NASA's Psyche Probe Executes Mars Flyby for Gravity Assist Toward Metal-Rich Asteroid

NASA's Psyche spacecraft executed a close flyby of Mars on May 15, passing approximately 2,800 miles (4,500 kilometers) above the planet's surface at a speed of 12,333 mph (19,848 kph). This maneuver utilized Mars' gravitational pull to increase the spacecraft's velocity and adjust its trajectory toward the asteroid Psyche, located in the main asteroid belt between Mars and Jupiter.

Launched on October 13, 2023, the Psyche mission aims to study the metal-rich asteroid, believed to be the exposed core of an ancient protoplanet. The spacecraft relies on a solar-electric propulsion system using xenon gas, gradually building speed over its journey. The Mars flyby serves as a gravity assist to conserve propellant and refine the spacecraft's path.

During the flyby, the mission team activated all science instruments to calibrate them and capture images of Mars. The multispectral imager took thousands of observations, providing valuable data and helping the team prepare for the spacecraft's arrival at the asteroid Psyche in 2029.

The asteroid Psyche measures approximately 173 miles (279 kilometers) across at its widest point and is thought to consist largely of iron and nickel. Studying this asteroid could offer insights into the formation of Earth and other rocky planets, whose molten metal cores are inaccessible for direct examination.

The mission team will monitor the spacecraft's trajectory using NASA's Deep Space Network to confirm the success of the gravity assist. The spacecraft is expected to arrive at the asteroid Psyche in August 2029 and will spend about two years orbiting and studying the celestial body.