Well, they made it.
Launched from nearly 350 million miles away, the "Curiosty Rover" made a perfect landing within a 1 1/2 mile square target zone. How cool is that.
NASA was even able to take photographs of it descending to the planet's surface by parachute, using satellite imaging.
Powered by Plutonium, the craft could carry on transmitting data for 20 or 30 years.
The Americans have predicted that they'll be able to put men "within the vicinity" of Mars by 2030 -which means they could very well rediscover the Rover, still trundling around the planet.
Every advance in technology fuels further advances which might've appeared impossible just a few years before. Personal communicators were only carried by the crew of the Starship Enterprise when I was a teenager. Now every kid over the age of 5 has their own mobile phone & can speak to anyone, anywhere on the planet, at the touch of a button.
Star Trek was set in the 23rd century. 200 years away. At this rate, it could be science fact long before then.