Scientists confused by all the water they’re finding on Mars

NASA scientists have discovered potential liquid water beneath Mars' South Pole, initially finding a large subsurface lake in 2018. Further analysis by a different NASA team revealed dozens of similar radar reflections, suggesting more widespread water or other phenomena. However, many signals were found in areas too cold for liquid water, leading to uncertainty about their nature. The findings imply either common liquid water beneath Mars' South Pole or alternative explanations for the radar signals.

What did NASA scientists initially suggest about the water beneath Mars' South Pole?

• There might be more liquid water than previously thought.

• The water is only present on the surface.

• There is no water beneath Mars' South Pole.

• The water is frozen solid.

What significant discovery was made by researchers in 2018 regarding Mars?

• They confirmed Mars has no water.

• They found a new type of rock on Mars.

• They discovered a large subsurface lake under Mars' South Pole.

• They found evidence of life on Mars.

How many additional underground lakes were found after the initial discovery?

• One more lake

• Two more lakes

• Three more lakes

• Four more lakes

What did the new NASA team find in their analysis of radar data?

• No new signals were found.

• Dozens of radar reflections similar to the lakes were found.

• Only one new signal was found.

• The original findings were incorrect.

What is uncertain about the newfound radar signals?

• Whether they are from a different planet.

• Whether they indicate the presence of liquid water.

• Whether they indicate the presence of life.

• Whether they are caused by atmospheric conditions.