Science

NASA's Psyche Mission Faces Troubling Glitch on Its Journey to a Mysterious Metallic Asteroid

2025-05-01

Author: Jia

A Journey to the Unknown Begins

Nearly two years ago, NASA launched the Psyche spacecraft, embarking on a groundbreaking mission to explore a unique asteroid that could hold secrets about the origins of our planet. This metal-rich asteroid, also named Psyche, lies in the main asteroid belt, and the mission aims to unravel its mysteries. However, as the spacecraft inches closer to its destination, it has encountered an unexpected hurdle—issues with its propulsion system.

A Sudden Propulsion Problem

The Psyche team at NASA is currently investigating a concerning drop in fuel pressure within the spacecraft's propulsion system. This glitch forced the Psyche to power down its thrusters, a critical function that must be restored before mid-June to ensure the mission's trajectory is not compromised. NASA reported, 'The mission team has chosen to defer thrusting while engineers work to understand the pressure decrease.'

Navigating the Journey Ahead

Launched in October 2023, the Psyche mission is on a staggering 2.2 billion-mile trek to its metallic target. The spacecraft initiated propulsion maneuvers in May 2024, using a solar electric propulsion system powered by sunlight, activating four electric thrusters. On April 1, a significant pressure drop was detected in the xenon gas line supplying the thrusters, plummeting from 36 psi to about 26 psi—prompting an automatic shutoff.

Engineers have a critical window of about six weeks to resolve this issue before the spacecraft needs to adjust its trajectory. As investigations continue, the mission team is considering switching to the backup fuel line to reactivate the thrusters and keep the mission on track.

What's at Stake?

If everything goes according to plan, the Psyche spacecraft is expected to enter the orbit of asteroid Psyche in late July 2029 and begin its exploration in August of the same year. The spacecraft is scheduled for a spectacular flyby of Mars in spring 2026, utilizing the planet's gravitational force to catapult itself toward the asteroid belt, nestled between Mars and Jupiter.

Delays and Setbacks

This ambitious mission has not been without challenges. Initially slated for a 2022 launch, setbacks in the spacecraft's flight software pushed its timeline. In fact, just a week before the original launch on October 5, 2023, engineers uncovered a potential overheating issue with the thrusters, necessitating a one-week delay to ensure everything operated smoothly.

The Significance of Psyche