I was following the tutorial of Blender Guru on YouTube, to make an Earth in Blender. I was finished with the first part. But then somehow my clouds were deleted (the Material of Clouds doesn't exist anymore). And I started making a new material for the clouds. But the whole sphere is white, cloudds can't be seen like in the first time. What could be the reason?
The big sphere is the earth and it is fully white. If I turn the opacity of the Clouds down (eye symbol), the Earth can be seen. So the problem is with the clouds

