WASHINGTON: NASA’s Ingenuity mini-helicopter has survived its first night alone on the frigid surface of Mars, the US space agency said, hailing it as “a major milestone” for the tiny craft as it prepares for its first flight.

The ultra-light aircraft was dropped on the surface on Saturday after detaching from the belly of the Perseverance rover, which touched down on the Red Planet on February 18.

Detached from the Perseverance, Ingenuity had to rely on its own solar-powered battery to run a vital heater to protect its unshielded electrical components from freezing and cracking during the bitter Martian night, where temperatures can plunge as low as minus 130 degrees Fahrenheit (minus 90 degrees Celsius).

Making it through the frigid Martian night was “a major milestone for the small rotorcraft,” NASA said in a statement Monday.