To estimate the orientation of the rock before it was drilled out of the ground, the team realized they need to measure three angles, the hade, azimuth, and roll, which are similar to the pitch, yaw, and roll of a boat.

The hade is essentially the tilt of the sample, while the azimuth is the absolute direction the sample is pointing relative to true north.

They realized that to estimate a sample's hade and azimuth they could use the rover's measurements of the drill's orientation, as they could assume the tilt of the drill is parallel to any sample that it extracts.

Chiles hade his commitment to Michigan State public in a social media post.

Robert’s agreement was announced on Jan. 2, 2020, and he hade his MLB debut on July 24 of that year.