Imagine you have a big round ball, like a globe, and you want to draw a map of the Earth on a flat piece of paper or computer screen. But when you do that, the Earth's round shape gets distorted, and some parts end up looking bigger or smaller than they really are.
One way to fix this is to use something called a projection, which is a special way of drawing the Earth's curved surface onto a flat map. The space-oblique mercator projection is one type of projection that can be used for this.
Basically, the space-oblique mercator projection takes the Earth's round shape and flattens it onto a rectangle. But it does this in a way that tries to keep the shapes and sizes of the continents and oceans as accurate as possible, while also making it easy to navigate on the map.
To do this, the space-oblique mercator projection uses a special mathematical formula to "wrap" the Earth's surface onto the rectangle. This formula is based on a specific angle that the map is tilted at, which is called the "oblique aspect."
Because the space-oblique mercator projection is a rather complex type of projection, it's not used as commonly as some other types. But it can be useful for mapping certain areas of the Earth, particularly those that are at a high latitude, or that stretch over long distances from east to west.