A fleet of silver arrows soars overhead. From the freezing ground below, the needle-like spears glimmer in the sunlight. They slice the atmosphere releasing sound waves where none existed moments earlier. The first dart lands, piercing the ground. A second falls hundreds of meters further on; a third somewhere in the distance. An explosive blast sounds and is carried miles through the thin air. The arrow finds its mark 1-2 meters underground. Mechanisms within the arrow deploy. Chambers fill with soil and mix with radioactive broth.
While this scenario sounds like an attack by weapons of mass destruction, it's quite the opposite. It's the search for life. Life as we've never known it. Life on Mars.