Firefly Aerospace’s Blue Ghost lander fell silent over the weekend, wrapping up two weeks of science experiments for NASA. The end came as the sun set at the moon, no longer providing energy for the lander’s solar panels.

Firefly, an American company, made a soft landing on the moon, becoming the second private company to do so. In collaboration with NASA, it’s a key step for future moon and Mars missions.

Blue Ghost touched down on March 2 and ran all 10 NASA science experiments without issue. It even watched last week's solar eclipse from the moon.