You can increase the size of the map displayed by adjusting the width and height (in the layout section of the Image tab) or by using image mouse mode and stretching the horizontal extents of the image with the right mouse button. When you load Blue Marble, it will fill the full 2D extents that you specify.
You can increase the size of the map displayed by adjusting the width and height (in the layout section of the Image tab) or by using image mouse mode and stretching the horizontal extents of the image with the right mouse button. When you load Blue Marble, it will fill the full 2D extents that you specify.