The summary of the text is:
- The text is a transcript of a tutorial on how to create a realistic earth in blender using free textures from NASA and some nodes in the material and compositor.
- The tutorial covers how to add a color map, a land ocean map, a topographical map, and a night light map to the earth sphere, and how to use adaptive subdivision, displacement, bump, and roughness to create details and variations.
- The tutorial also shows how to add an atmosphere layer with volume scatter, a cloud layer with subsurface scattering and emission, and how to use the sun object's texture coordinates to control the emission strength of the night lights.
- The tutorial demonstrates how to use a shadow pass and a glossy direct pass in the compositor to create atmospheric fall-off and glare effects, and how to tweak the values and colors to match reference photos.
Some possible facts extracted from the text are:
1. The text is a transcript of a tutorial on how to create a realistic earth in blender.
2. The tutorial uses low resolution UV sphere, adaptive subdivision, and image textures from NASA to create the surface of the earth.
3. The tutorial uses principled shader, subsurface scattering, and displacement nodes to create the atmosphere and the clouds.
4. The tutorial uses texture coordinate, normal, and map range nodes to create the night lights on the dark side of the earth.
5. The tutorial uses compositor, glare node, and alpha over node to create the atmospheric fall off and the sun glare on the ocean.
6. The tutorial uses a black body node to set the color temperature of the emission for the clouds.
7. The tutorial renders a shot of America with rivers and mountains as an example.
8. The tutorial is made by Blender Guru, who also promotes the Polygon add-on and the Baker's Dozen NFT project.