Prompt:

Seen through a window. Photo of the surface of an alien world. Relief. Very unreal, amazing flora.
Warm lighting. Various color tones. Tropical. 
Hyper-realistic photography, cinematic, shallow depth of field, style of Sam Yang and Lois van Baarle
Very detailed. Magic. twilight. Glow in the dark. 
Award winning photo. Trending on art station. 
 

Negative prompt:

Unsharp, blurry. 
Text, watermark.
Poor quality. Average quality.

Model:

Juggernaut

Notes:

This was mostly playing with words till we got something nice. Just an impression how an alien world could look like from the window of our cave. Mention different styles to get whole different outputs, even when being inspired by artists who never did a landscape or anything alien.