What’s a sol?

A Martian day is 39 minutes and 35 seconds longer than an Earth day. To distinguish the two, we use the term “sol” when referring to a Martian day.

Landers we have sent to Mars use special 24 hour clocks with longer seconds than those of Earth, so that a sol is divided into 24 periods, just like on Earth. The operations teams for these landers work and live by the same clocks. This means, for people working on these crews, their schedule shifts 40 minutes later each day. This makes for interesting problems.

Curiosity at 2000 Sols

Curiosity is at 2000 sols and still going.

(Note the comment regarding sky color)

Looks like we made it: 2,000 sols on Mars, you guys! I’m looking back on 2,000 Martian days of exploration, and…

Posted by NASA’s Curiosity Mars Rover on Thursday, March 22, 2018

Gale Crater Panorama

JPL posted a nifty panorama from Curiosity today.

There’s also a video description at https://www.youtube.com/watch?v=U5nrrnAukwI.

(Regarding the color of the sky, note the comment at the end of the video: “To aid geologists, colors in the image are white balanced so rocks appear the same color as the same rocks would on Earth.”)