Dusty solar panels and darker skies are expected to bring the Mars lander mission to a close around the end of this year.

NASA's InSight Mars lander is gradually losing power and is anticipated to end science operations later this summer. By December, InSight's team expects the lander to have become inoperative, concluding a mission that has thus far detected more than 1,300 marsquakes—most recently, a magnitude 5 that occurred on May 4—and located quake-prone regions of the Red Planet.

The information gathered from those quakes has allowed scientists to measure the depth and composition of Mars' crust, mantle, and core. Additionally, InSight (short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) has recorded invaluable weather data and studied remnants of Mars' ancient magnetic field.

Covered in the red dust that sealed its fate, the NASA InSight lander is slowly shutting down, more than 250 million kilometers from home.

With its solar panels now obscured by the red planet's debris, the four-year-old robot is running out of power. One by one, its instruments are being taken offline: its robotic arm moving into "retirement pose," its seismometer likely to be turned off sometime in June.

Dr. Catherine Johnson, co-investigator on the InSight science team and professor in the department of earth, ocean and atmospheric sciences, discusses what the team discovered, what questions are left to answer, and just what will happen to the little lander that could.

What was the lander's mission and what did it find?