Yes, but it only places it on the clipboard, not directly to a file. Some people have difficulty with opening paint, pasting the image and saving the file. Especially if you need to take a quick series of screenshots. Arrr! Capt'n Skunky
Welcome to the KSP Forums! The F1 key will take a screen shot and place it in a folder called \screenshots\ in your game folder. Happy Launching! Arrr! Capt'n Skunky