NASA recently sent Curiosity, its latest exploration rover, to Mars to teach us more about our neighboring Red Planet. Learn about the exploration rovers and the reasons for our exploration of Mars.
It was a small step for a man, a giant leap for mankind. But some people say that the moon landings never happened at all. Why all the conspiracy theories? See more »
The Voyager spacecraft use 23-watt radios. This is higher than the 3 watts a typical cell phone uses, but in the grand scheme of things it is still a low-power transmitter. The key to receiving the signals is therefore not the power of the radio, but a combination of three other things. See more »
Is it possible to see (with a telescope) the stuff left behind on the moon by the Apollo astronauts to prove whether the missions were real? See more »
Until its fiery landing in the Pacific Ocean in Mach 2001, the MIR space station was one of the largest objects orbiting the planet, so large that it was especially easy to see -- if you knew what you were looking for. See more »