Residents from as far north as Bakersfield to perhaps as far south as Rosarito, Mexico, may see the Atlas rocket rising in the predawn sky and then heading south, parallel to the coastline.
In a bid to study the deep interior of the Red Planet and find traces of how it was formed, NASA is all set to send a first-ever such mission to Mars. It will also be the first NASA mission since the Apollo moon landings to place a seismometer, a device that measures quakes, on the soil of another planet.
InSight carries a suite of sensitive instruments to gather data and, unlike a rover mission, these instruments require a stationary lander from which they can carefully be placed on and below the Martian surface.
Looking deep into Mars will let scientists understand how different its crust, mantle and core are from Earth. Several European partners have contributed instruments and key components to the InSight mission.