Editors Used: 
Ultimate Doom Builder (latest)
SLADE3 v3.2.1
_________
CREDITS:
_________

ID Software:
Doom / Doom 2 IWAD + Resources, Ultimate Doom Episode 2 Sky

Ola Björling (ukiro):
OTEX_1.1

Esa Repo (Espi)
Suspended in Dusk + texture choice inspiration

Phoenyx + Arsinikk :
Cyberdreams MIDI Pack by Phoenyx + "Cryosleep" by Arsinikk

https://www.doomworld.com/forum/topic/146843-cyberdreams-midi-pack-a-community-made-soundtrack-for-cyberdreams/?tab=comments#comment-2828608

Requiem:
STBAR + STARMS

AshtralFiend:

'Dual' from 'AshtralFiend's Palette Selection' 

https://www.doomworld.com/forum/topic/145707-ashtralfiends-palette-selection/?tab=comments#comment-2809096

SciTechDaily.com - Mars surface concept art picture (TITLEPIC Graphic)
_______________
My other works: 

Hells Hole - https://www.doomworld.com/idgames/levels/doom2/g-i/hhole
TOWN1 - https://www.doomworld.com/idgames/levels/doom2/s-u/town1
Space Communications - https://www.doomworld.com/idgames/levels/doom2/s-u/scom
_______________


