Researchers Uncover Vital Proof of Mars’ Atmospheric Transformations Through the Ages
Researchers have recently collected evidence of the sputtering of Mars’ atmosphere for the first time, a finding that could offer vital insights into the planet’s history and its possible habitability moving forward. It is widely accepted that Mars once possessed a strong atmosphere, allowing for rivers and lakes on its surface. Nevertheless, data explaining the process of how these water bodies dried up has remained hard to find.
Considering the difficulties in obtaining samples from the Mars Sample Return mission, scientists are looking into alternative approaches to comprehend Mars’ atmospheric changes. By examining nine years of data, researchers have achieved notable progress in this field.
The information, gathered by NASA’s MAVEN spacecraft since its arrival in Mars’ orbit in 2014, consists of detailed insights into the planet’s atmosphere and its ongoing loss. The researchers have presented their results in *Science Advances*, highlighting the sputtering of ions surrounding the atmosphere, which they consider a key element in the erosion of the Martian atmosphere.
The study indicates that at altitudes exceeding 350 kilometers (217 miles), the density of argon—an ion utilized to monitor atmospheric sputtering—fluctuates significantly according to the orientation of the solar wind’s electric field. Conversely, lower atmospheric heights exhibit more stable density.
This finding is a vital component in understanding the historical transformations of Mars’ atmosphere. It also clarifies how sputtering has evolved compared to millions of years ago, when the Sun was younger and more vigorous.
Read More