FP trendAugust 02, 2021 6:43:12 PM
Three news research articles have indicated that the radar signals generated from Mars may have been caused by clay, not water. Initially, the signals were believed to have come from the water below the structures at the south pole of Mars.
The instrument used to measure these signals was present on the Mars Express orbiter of the European Space Agency, ESA. However, three more recent studies indicate that clay could be the material that causes these radars to pick up signals.
Scientist Isaac Smith of the University of York has proposed that the underground structure is actually a group of clays called smectites. He also measured the properties of clay in a laboratory.
Until now, scientists have believed that there were underground lakes beneath the ice sheet at the south pole of Mars.
Jeffrey Plaut of the Jet Propulsion Laboratory, National Aeronautics and Space Administration (NASA) along with Aditya Khuller, who was interning at JPL and is a PhD student at Arizona State University, use the data from Mars Advanced Radar for Subsurface and Ionospheric Sounding (MARSIS)). They analyzed 44,000 radar echoes over 15 years.
Smith found that the response generated by the frozen clay samples matched the observations made by the MARSIS radar.
Meanwhile, the agency has also shared the latest images of Mars. The first of three images of the red planet shows a layered rock formation within Jiji crater. The second image is of the polar dune field during the northern spring. The third and last image is of ice sheets.
By posting on his Instagram account, NASA shared it with the caption that he received an email from Mars. The publication has received more than 10 thousand likes.