Sonali Tiwary
A strange shape in a Mars photograph is consistent with a transient imaging artifact; a cosmic-ray hit is one possible explanation. The image was actually taken back on August 20, 2023, not recently. It’s a good reminder of how easy it is to misread space photos.
When was the photo actually taken?
NASA’s Curiosity rover captured the image on Sol 3924 — the 3,924th Martian day of its mission — in Gale Crater. The exact timestamp was 22:27:46 UTC. That detail matters, because it lets researchers check the surrounding photos to see if the shape was really there.
Why don’t scientists think it’s a real object?
The feature appears in a single reported frame and is absent from nearby images of the scene. Curiosity takes photos in quick sequences, and the images taken 13 seconds before and nearby images of the same scene taken seconds earlier do not show it. Its absence from nearby frames makes a persistent physical object in the scene less likely.
What is a cosmic ray artifact?
Cosmic rays are high-energy particles that travel through space. When one of these particles strikes a digital camera sensor, it can create a bright streak, dot, or odd-shaped artifact in the image — completely unrelated to anything actually in front of the camera. Mars does not have a planet-wide global magnetic field like Earth’s, leaving its surface environment more exposed to space radiation. That’s why Mars rover images occasionally show these odd artifacts.
Is there any evidence of alien life here?
No. The image itself provides no evidence of biological activity. The jellyfish-like appearance can also be understood as pareidolia: people naturally recognize familiar shapes in ambiguous patterns. It’s the same reason people spot shapes in clouds or on toast.
Why this story keeps coming back
Photos like this tend to resurface online months or years after they were taken, often stripped of their original date and context. Checking the timestamp and looking at the full sequence of images — as NASA’s own data allows — usually clears up the mystery quickly.
