Many of these space travelers are, of course, NASA astronauts. That means they went through a rigorous application and training process. So, what exactly does it take to be an astronaut?
There’s a mysterious rock traveling through our solar system. Could it in fact not be a rock at all, but an alien probe?
How much is Mars really like Earth? Could our solar system neighbor become a travel destination in the future? Could we live there? Everyday Einstein investigates the Martian habitat.
How much do you know about the largest human-made object in space, the ISS? Here are cool facts about what it is, who lives there, and where you can see it.
Adding up all of the mass in every asteroid in our entire solar system totals only less than the mass of our Moon. But what’s the difference between asteroid, meteor, meteorite, and even comet?