Press space or click to advance the slide. You can also use the right and left arrow keys to go back and forward if you like. Clicking the green flag will play some nice quiet music, but you don't have to do that if you don't want to. You'll probably want to make it full-screen to read all the text. The planet image is an absolutely huge vector, so you shouldn't have issues with quality.
Iastora is a planet in a novel I'm writing. I haven't decided how prominently it will feature, and most of these details were made up on the spot. I like them, though. I pronounce it "eye-uh-store-uh." You could pronounce it like that, or you could pronounce it "ih-us-ter-uh" or "ee-uh-star-ah" or however makes the most sense to you. I don't recommend pronouncing it the way that makes the least sense to you, but you could do that too if you want. Iastora has a moon called Ustvern, but it is small and not very interesting, so I decided not to talk about it. I also haven't made a nice picture of Ustvern yet and don't have time to do so now. Think "small, gray, and with craters" and you'll know exactly what it looks like. I made the planet picture in GIMP. It's derived from a map, which I generated here: http://topps.diku.dk/torbenm/maps.msp The music (which plays if you click the green flag) is "Planetarium" from the Homestuck unofficial album Land of Fans and Music 2.