An image captured in 2006 has recently been the subject of debate and controversy on social media.
Originally photographed by the HiRISE camera aboard NASA's Mars Reconnaissance Orbiter, the image shows part of the Valles Marineris region of Mars - an area characterized by the abundance of canyons and chasms dotted across the landscape.
More recently, however, a zoomed-in section of the image showing what appears to be a disc-shaped object embedded in the sediment at the end of a trench has been gaining attention online.
The image, it has been argued, is evidence of a UFO crash.
Scientists have long dismissed any such claims, instead favoring the more conventional explanation that this is simply part of the landscape and is a naturally occurring chasm.
While it certainly does look as though there is a disc-shaped object embedded at the end of it, we tend to favor the official explanation in this particular case.
In all likelihood, the 'disc' is little more than a naturally occurring formation.
You can check out the original image - here - as well as the original description - here.
An analysis of the 'UFO' by anomaly-hunter Jean Ward can also be viewed in the video below.