https://www.cnet.com/news/nasa-rover-curiosity-fulfills-dream-drills-into-mars-clay/

"This is a moment that the mission has been waiting for since Gale Crater was chosen as our landing site," wrote Curiosity team member Scott Guzewich in a mission update. 

The bedrock target is nicknamed "Aberlady." Curiosity will investigate the drill hole and composition of the rock powder as it seeks to learn more about this region of Mars.