Moroccan Meteorite May Be a 4.4-Billion-Year-Old Chunk of Dark Martian Crust

Mars is often referred to as the Red Planet. But its signature color is only skin-deep - or, I should say, dust-deep. Beneath its rusty regolith Mars has many other hues and shades as well, from pale greys like those found inside holes drilled by Curiosity to large dark regions that are the result of ancient lava […]