For a long time, scientists believed that Mars was indeed a "Red Planet". When it's far away from us, Mars appears as a tiny, twinkling red dot in the night sky, like a glowing ember in a sea of stars. But as it gets closer to Earth, it becomes more visible. So its reddish hue becomes more apparent. But is it really red, and what other secrets is it hiding? Learn more about your ad choices. Visit megaphone.fm/adchoices