New study explains why is Mars red

For years, spacecraft have been studying Mars, revealing ancient signs of lakes and rivers that suggest the planet once had liquid water. New research is now shedding light on why Mars is covered in red dust.

According to a recent study published in Nature Communications, the red colour of Mars comes from iron oxides, commonly known as rust. This rust forms when liquid water is present, further supporting the idea that Mars once had water on its surface.

Colin Wilson, a project scientist for the European Space Agency’s ExoMars Trace…