The ISS will soon get bigger, and the Russians are preparing for it

Russians are performing a spacewalk today to prepare for the addition of a new science module to the ISS. The module will replace an aging one and will launch in early 2021. This will be the first of several spacewalks to prepare the space station for the arrival of the new module. The International Space Station is the one place outside of Earth where humans have maintained a presence for a long, consistent stretch of time. It's also changed a lot since astronauts first began calling it a tempo...