The United States has another "Rover" on Mars and it's doing a lot of exploring.
There is also a small helicopter they will use for flights to distant locations and NASA tested the chopper for the first time yesterday and then sent out a video of the flight.
It's sitting at the bottom left of the screen and you will see it lift off, travel to the right out of the picture and then come back and land again.
The first powered flight here on Terra was by the Wright brothers and this is equally important because it is the first powered flight on mars....., even if nobody was on board! (The first flight went about 330 feet, but when they tried to go somewhere a couple of hours later the helicopter didn't move! Scientists think it may be a problem with the computer and they are trying to fix it!)