 |
 |
| Truesense provided the sensor for the Mars Curiosity rover's "hand lens imager", which sent back this high-resolution image of Martian dust that had accumulated on a special penny that traveled to the red planet. Minted in 1909, the penny is used as a part of a calibration target to easily show the scale of objects in photographs. Credit: NASA. |
| © 2025 SPIE Europe |
|
