When did the following event happen?
The Mars Curiosity Rover lands in the Gale Crater on the planet Mars.
Select a space in the timeline below.
2008
Barack Obama is elected as the first African-American president of the United States.
Note:
BCE means that the date is the number of years before the current era (CE/AD).
c. is short for 'circa' and indicates that the date is considered approximate.