: If you stood on the Martian surface at dusk, you’d witness a blue sunset . Because of the way fine dust in the atmosphere scatters light, the colors are the reverse of Earth: pinkish-red skies during the day and a blue glow around the sun as it sets.
Here are some of the most mind-blowing facts about our potential future home:
Whether it's the search for ancient microbial life or the dream of building the first Martian city , Mars continues to be our greatest cosmic frontier.
: The Valles Marineris canyon system stretches for 2,500 miles—nearly the width of Australia . In some places, it plunges 6 miles deep , dwarfing Earth’s Grand Canyon.
