VIDEO: NASA Mars lander InSight falls silent

A NASA Mars Insight Lander went silent this week.

It could be the end of the red dusty line for NASA’s InSight lander, which has fallen silent after four years on Mars.

The lander’s power levels have been dwindling for months because of all the dust coating its solar panels. Ground controllers at California's Jet Propulsion Laboratory knew the end was near, but NASA reported that InSight unexpectedly didn't respond to communications from Earth on Sunday.

“It's assumed InSight may have reached the end of its operations,” NASA said late Monday, adding that its last communication was Thursday. "It’s unknown what prompted the change in its energy."

The team will keep trying to contact InSight, just in case.

InSight landed on Mars in 2018 and was the first spacecraft to document a marsquake. It detected more than 1,300 marsquakes with its French-built seismometer, including several caused by meteoroid strikes. The most recent marsquake sensed by InSight, earlier this year, left the ground shaking for at least six hours, according to NASA.

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