👉 The term "defluvium" is often used in the context of space exploration and astronomy, particularly when discussing the conditions on Mars. In this case, it could refer to a dense, dark, or cold environment that appears to lack atmosphere, resulting from significant amounts of carbon dioxide (CO2) emissions from the planet's surface. This condition is known as defluvium, which refers to the presence of high levels of CO2 in the atmosphere, causing conditions similar to those experienced