The Mars rover Curiosity’s primary science mission has begun.

After more than two years and a dangerous trek of about six miles, NASA’s SUV-sized, robotic rover has made its first drill into Mount Sharp — the geologic site scientists have been focused on since before Curiosity landed on Mars.

The rover, however, has been far from idle. In the last two years, it has drilled holes , sampled soil and rocks and even found evidence of ancient water flows on the surface of the Red Planet.

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