Jarosite is the sulfate mineral found on the surface of Mars that indicates the past presence of liquid water.
Many speculated about the presence of liquid water and rusted iron on the planet's surface.
Mars is believed to have had liquid water in the past based on evidence from river valleys, lake beds, and minerals that form in the presence of water. This suggests that ancient Mars was more hospitable to life than it is today.
Mars has evidence of erosion by water, including river valleys, channels, and minerals formed in the presence of water. Mars once had liquid water flowing on its surface, shaping the landscape over time.
Widespread deposits of minerals that can only form in the presence of water have been found by the Mars rovers. Additionally, water ice is found across large areas of Mars, and very small amounts of it may become liquid occasionally.
Evidence on Mars such as dried-up riverbeds, mineral deposits that form in the presence of water, and the presence of ice caps suggest that liquid water may have existed on the planet in the past. Additionally, recent discoveries of hydrated minerals on Mars provide further evidence that water played a significant role in the planet's history.
Unlikely, as it is now, there is insufficient evidence to support the presence of liquid water which means there it is higly unlikey that that Bigfoot lives on Mars.
Mars is known to have water in the form of ice at its poles and in underground reservoirs. There have been observations suggesting the possible presence of liquid water on Mars in the past, but currently, any liquid water on the surface would likely be very salty and briny, making it unsustainable for most forms of life.
Mars has no liquid surface water.
There is no liquid water on Mars.
Evidence of liquid water on Mars includes the detection of recurring slope lineae (RSL), which are dark streaks that appear to ebb and flow with the Martian seasons, suggesting the presence of briny water. Additionally, radar data from the Mars Express orbiter have revealed subsurface lakes of liquid water beneath the south polar ice cap. Analysis of Martian soil and mineralogy also indicates past interactions with liquid water, supporting the hypothesis that Mars once had a wetter climate conducive to liquid water.
There is evidence that there was once water on Mars due to large gullies on its surface. This may suggest that running liquid water may have eroded it away and the fact that Mars has 'frozen' ice caps may suggest that it was once liquid water that had frozen over a large period of time.