NASA rovers Curiosity and Perseverance have photographed some fairly unusual objects on the floor of Mars.
From human-like heads and femur-like bones, to ‘mushrooms’ and suspiciously geometric structures, these objects are usually finally decided to be one thing Mars has in abundance. Yep, you bought it – rocks.
In a picture snapped by Curiosity in 2023, and newly doing the is-there-life-on-Mars rounds, nevertheless, the reason is a bit more uncommon.
On the far left of an in any other case regular image of a Martian panorama is an odd darkish shadow that appears a little bit just like the silhouette of a jellyfish with tentacles dangling down – or, extra appropriately, a Martian Tripod straight out of H.G. Wells’ Warfare of the Worlds.
Clearly, this characteristic shouldn’t be as straightforward to clarify away as a rock – however, equally as clearly (or it must be), nor are there alien jellyfish drifting about within the environment of Mars.
As a substitute, the mysterious smudge is probably going way more cosmic in origin – a charged particle raining down from house and smacking into the silicon detector of Curiosity’s NavCam.
In reality, there’s a simple approach to be pretty assured that no matter it’s we’re taking a look at shouldn’t be truly an ominous “jellyfish” perched on a Martian ridge.
Curiosity routinely takes a number of photos of a goal, and this can be a good illustration of why.
The eerie jellyfish shot was taken on 20 August 2023 at 22:27:46 UTC. It additionally took pictures of the very same scene utilizing the very same instrument, 13 seconds and 25 seconds earlier.
Neither of the 2 earlier photos reveals even a touch of a negative-space jellyfish.
Neither is this the primary time an odd, fleeting smudge has appeared in considered one of Curiosity’s photos.
Cosmic rays are high-energy particles that consistently rain down from house. Right here on Earth, we do not usually have to fret about them – our planet’s magnetic subject deflects many, whereas those who get via are inclined to smash into particles in our thick environment, producing showers of secondary particles excessive overhead.
Mars is not almost so properly defended. It has no world magnetic subject, and its environment has simply 0.5 % of the mass of Earth’s, leaving Curiosity comparatively uncovered to the energetic particles hammering down from house.
So it is truly common for cosmic-ray artifacts to indicate up in Curiosity photos. These charged particles routinely strike the detectors of cameras working past Earth’s protecting magnetic subject and environment.
Once they do, they’ll depart behind glitches within the ensuing photos.
For Curiosity’s photographs, these typically seem like vivid white patches, as if somebody has hit the digicam from afar with a tiny laser pointer, or bright white streaks and staticky speckles. They will take just a few completely different types.
“Within the hundreds of photos we have acquired from Curiosity, we see ones with vivid spots almost each week,” imaging scientist and techniques engineer Justin Maki of NASA’s Jet Propulsion Laboratory said in 2014.
However cosmic ray artifacts do not must be vivid white, as they’re often described. In a video recorded using Curiosity’s Hazcam in 2023, a “small black artifact” is famous as originating from a cosmic ray putting the sensor.
These occasions are temporary, often seen in only a single body – precisely the form of habits seen in Curiosity’s mysterious “jellyfish”.
That does not imply we will definitively blame a cosmic ray for this specific apparition. With out evaluation from the Curiosity imaging crew, different digicam or processing artifacts cannot be dominated out.
Associated: Mysterious Structure on Mars Looks Uncannily Like an Ancient Egyptian Pyramid
However the photos themselves make one factor fairly clear: No matter produced the jellyfish was nearly definitely occurring within the digicam, not lurking on the floor of Mars.
Mars would not want jellyfish, or severed heads, or bizarre pyramids to be fascinating.
The explanation we see these issues is fascinating sufficient: We now have robots exploring a whole different planet on our behalf – one whose geology throws up some bonkers rocks, and which leaves rovers sitting geese to be bopped on the top by particles which will have traveled half the cosmos to get there.
This text was fact-checked by Michael Irving and edited by Michael Irving. Whereas we pleasure ourselves on our course of, we’re solely human. For those who spot a mistake, please let us know.
