What are some distinguishing features about Mars?
1. Has a reddish hue over 3/5 of the planet, which we now known to be caused by red dust and rocks on the surface of the planet. 2. Has polar ice caps waxing and waning with the seasons that we now know to be composed both of dry ice (frozen carbon dioxide) and water ice. 3. Has surface markings that some originally thought looked like “canals” from Earth. These are now known to be features like the edges of mountain ranges. 4. Has areas of changing color that were once thought to correspond to vegetation. We now believe these regions of changing color to be due to blowing sand, not vegetation. Has an atmosphere with clouds.
