Perseverance's Three Forks Sample Depot Selfie. NASA's Perseverance Mars rover took a selfie with several of the 10 sample tubes it deposited at a sample depot it is creating within an area of Jezero Crater nicknamed Three Forks. The image was taken by the WATSON (Wide Angle Topographic Sensor for Operations and eNgineering) camera on the end of the rover's robotic arm on Jan. 22, 2023, the 684th Martian day, or sol, of the mission. The ninth tube dropped during the construction of the depot, containing the sample the science team refers to as Atsah, can be seen in front of the rover. Other sample tubes are visible in the background. In an animated GIF, the rover looks down at the Atsah sample then back at the camera. The selfie is composed of 59 individual WATSON images that were stitched together once they were sent back to Earth. The Curiosity rover takes similar selfies using a camera on its robotic arm; videos explaining how the rovers take their selfies can be found here. The dep