NASA scientists are preparing the robotic rover Curiosity to begin exploring the surface of Mars.
Earlier this week, the craft landed on the red planet, in Gale Crater near a peak some have called Mount Sharp.
Astronomer Brad Smith, of the International Astronomical Union, explains to anchor Lisa Mullins how geographical features on Mars are named.
Smith also talks about why "Mount Sharp"—near where NASA's rover Curiosity landed – is not an official moniker.
The mountain at the center of Gale Crater is called "Aeolis Mons."