There aren't many 15-year-olds around that have advanced the human race as much as our next subject.
This week NASA celebrates the 15th birthday of the International Space Station and Newsworthy thinks it's a good cause for celebration too.
Fifteen years ago we didn't have social media, or the space station. Now we get daily tweets from astronauts floating 400km above the Earth.
Here's a look at some of the best images the space station has given us.
Watch the video.