On this field on the horizon is a tree against the skyOn this field on the horizon is a tree against the sky
A mill in the middle of a clearing with a clear skyA mill in the middle of a clearing with a clear sky
Frost-covered branches against a blue sky backgroundFrost-covered branches against a blue sky background
Видимая над землёй атмосфера — пространство в форме свода, купола. Верхняя часть полости рта.