NASA’s Psyche spacecraft has successfully carried out a gravity-assist maneuver at Mars, a critical step that puts the mission on track for its planned arrival at asteroid Psyche in 2029. The encounter also provided scientists with an unusual series of images.
The flyby was about more than adjusting the spacecraft’s trajectory. It also gave mission teams an opportunity to test Psyche’s instruments and collect new observations of Mars. During the close encounter, the spacecraft captured thousands of images, offering some rarely seen views of the Red Planet.
Mars Gives Psyche The Boost It Needed
On May 15, Psyche passed just 4,609 kilometers (2,864 miles) above the Martian surface. The carefully planned maneuver allowed the spacecraft to use the planet’s gravity as a natural slingshot, changing both its velocity and orbital trajectory.
NASA’s Jet Propulsion Laboratory reported that the flyby increased the spacecraft’s speed by approximately 1,000 miles per hour while shifting its orbital plane by about one degree relative to the Sun.
“We’ve confirmed that Mars gave the spacecraft a 1,000 mile-per-hour boost and shifted its orbital plane by about 1 degree relative to the Sun. We are now on course for arrival at the asteroid Psyche in summer 2029,” said Don Han, the mission’s navigation lead at NASA’s Jet Propulsion Laboratory.
The maneuver was a major milestone for a mission that will eventually travel 3.5 billion kilometers (2.2 billion miles) before reaching its destination. The gravity assist was designed to place the spacecraft on the most efficient path toward the asteroid.
An Uncommon Perspective On The Red Planet
One of the most notable results of the flyby was the imagery collected as Psyche approached Mars from the night side. This trajectory enabled the spacecraft to observe the planet as a crescent before it gradually appeared almost fully illuminated.
Mission updates indicate that thousands of images were captured during the encounter while all of the spacecraft’s instruments were active. The observations served a dual purpose:checking instrument performance and gathering scientific data.
Among the images released after the flyby is a color-enhanced view of the double-ringed Huygens crater, obtained shortly after closest approach. Another photograph shows a nearly full Mars rotated on its side, with the south pole positioned at one end of the disk. The immense canyon system Valles Marineris is clearly visible on the right side of the image.
The spacecraft also documented theSyrtis region, where winds have left distinctive marks across the landscape. Some of the observed wind streaks stretch for about 50 kilometers (30 miles), matching the scale of the largest craters visible in the same images.
Probing Mars Through a Rare Encounter
Researchers also used the flyby to search for a possible dust ring around Mars. Scientists think micrometeorite impacts on the planet’s moons, Phobos and Deimos, could eject dust into space, creating a faint ring around the planet.
The mission team also looked for previously undetected moonlets, such as small captured asteroids or fragments from the two moons. Similar searches will be conducted around asteroid Psyche after the spacecraft arrives.
Psyche itself remains the mission’s main target. The asteroid is composed of metal and silicate materials and may be up to 60 percent metal by volume. Once thought to be the exposed core of a destroyed planetary body, it could have a more complex origin, one of the key questions the mission aims to answer.
