 Now we're going to continue with our introduction to Stellarium and show you a few of the other controls that you have options on. So here we've got our sky and our little cardinal points and the Sun is currently up in the sky for this recording. And when the Sun is up in the sky, the sky looks blue. Now we can get into the science of this in class of why the sky looks blue, but it's because of the interaction of the sunlight with the atmosphere. Well, Stellarium actually has some really cool features if you come down to the bottom bar where you can actually change whether the atmosphere is there. So by clicking on that, I see that the Sun is still up, but I no longer have the blue sky allowing me to see what else is in the sky at this time, even though I can't see it because of the atmosphere. Similarly, when we're standing on Earth, Earth is blocking our view. We can see what's up in the sky, but we can't see anything that's down below. And Stellarium has the option of turning off the ground. Now when I did that, I still have my positions for which direction I'm looking, but since I'm kind of simulating being out in space, I don't really need those things either. So I can come down here and the cardinal points, which is between the ground and the atmosphere controls, you can turn those off. So this is more of a view of what space would look like from space. Now just like when we had the ground in place and we saw that if I try to zoom out too much, I start getting a little bit of an issue on the edge. You can't see it so much without the ground there, but notice that if I start trying to move things around, it kind of bends things on the edges of the sky. So just be aware that if you are zoomed really far out and you're trying to make adjustments, it can change a little bit of what you're seeing on the edge, but the center should be okay. And of course, if you zoom in, you should be okay as well. So that's how you can change the ground and the atmosphere to get a view of what would be out in space if we didn't have the atmosphere and the ground around us. Now I can come back in and I can add back in my ground and I can add back in my atmosphere and my cardinal points to put things back the way they were so that we can see the sky as it would look if I would actually go outside.