"The successful landing of Curiosity -- the most sophisticated roving laboratory ever to land on another planet -- marks an unprecedented feat of technology that will stand as a point of national pride far into the future," President Barack Obama said in a statement congratulating the NASA employees who had worked on the project.
The scientific community reacted to the achievement with a mixture of elation and relief.
"Rationally I know it was supposed to work all along, but emotionally it always seemed completely crazy," said James Wray, assistant professor at Georgia Institute of Technology, who is affiliated with the science team of Curiosity. "So to see all those steps being ticked off and actually working, it's a huge relief."
The initial images the SUV-sized rover sent back to Earth were black and white and grainy, but one showed its wheel resting on the stony ground and the vehicle's shadow appeared in another. Larger color images are expected later in the week, NASA said.