NASA's OSIRIS-REx mission is scheduled to return samples of Asteroid Bennu to Earth. Credit: NASA Goddard Space Flight Center ...

The asteroid appeared as a speck of light to the spacecraft’s UA-built PolyCam camera, but Bennu will seem to grow now that OSIRIS-REx has begun the approach phase of the mission.

What was the most surprising or unexpected thing that happened as the mission unfolded? There are so many. I call Bennu the “trickster asteroid” because it constantly surprised us and challenged us.