In this week's Ask an Expert Live, join scientist John Grant as he provides an update on the Mars rovers and some of the amazing discoveries they are making. Grant has been a member of the Science Team for the Mars Exploration Rovers since 2002 and is one of the Team's Science Operations Working Group Chairs responsible for leading day-to-day science planning of the rovers which have been operating. He is a geologist in the Museum's scientific research unit, the Center for Earth and Planteary Studies (CEPS).

Tune in on Facebook Live.

Planning to attend in-person? Meet in the Exploring the Planets gallery. 

Every Wednesday at 12:30 p.m. we will go live on the National Air and Space Museum Facebook page with an Ask an Expert talk. We’ll select a different aviation or space topic each week, and a Museum staff member will discuss the history, stories, or personalities related to a specific artifact or exhibition in the Museum. Tune in on Facebook Live each week to join the talk and ask our experts questions.