NASA’s Psyche mission captured a series of images showing the crescent of Mars growing in size as the spacecraft approached the planet for a gravity assist between May 2 and May 15, 2026. According to NASA, the spacecraft used its multispectral imager to document the approach from a high phase angle, resulting in a thin, sunlight-reflecting crescent before the planet eventually overfilled the field of view during close approach.
How Psyche Used Mars for a Gravity Assist
The Psyche spacecraft didn’t just photograph Mars; it used the planet’s mass to change its trajectory. This maneuver, known as a gravity assist, allows a probe to gain or lose speed and change direction without consuming excessive fuel. According to NASA/JPL-Caltech/ASU, the mission captured high-resolution images of the Martian surface during this window.
By approaching from a high phase angle, the spacecraft saw Mars primarily as a sliver of light. As the distance closed, the “growing crescent” effect occurred, which the Psyche team later compiled into a time-lapse video of the entire encounter.
Did you know? A “phase angle” refers to the angle between the sun and the observer as seen from the target. A high phase angle means the spacecraft was positioned such that only a small portion of the planet’s day-side was visible, creating the crescent effect.
The Role of Multispectral Imaging in Deep Space
The images were captured using Psyche’s multispectral imager. Unlike a standard camera, this instrument captures data across different wavelengths of light.
Future Trends in Interplanetary Navigation
Pro Tip: To follow real-time updates on deep space missions, check the NASA Science portal for official photo journals and mission logs.
Comparing Flyby Imaging vs. Orbital Mapping
A flyby, like the one Psyche performed in May 2026, provides a “snapshot” of a specific region at high speed.
Frequently Asked Questions
What is the purpose of the Psyche mission?
Why did Mars look like a crescent?
According to NASA, this was due to the spacecraft’s high phase angle, meaning it was positioned where only a small part of the sunlit side of Mars was visible.
When did the Mars encounter happen?
The approach and gravity assist took place between May 2 and May 15, 2026.
Want to see more of the cosmos? Share your thoughts on the Psyche mission in the comments below or subscribe to our newsletter for the latest updates on interstellar exploration.
Worth a look