Spaceport in large Mars cave by Connor Sheehan

Picture of the Day 9/9/2018 - Spaceport in a large Mars cave by British concept artist Connor Sheehan. More of his art here.

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Olympus Mons erupting

Picture of the Day 6/9/2018 - Eruption of the Olympus Mons on Mars seen by an astronaut; created by Reddit user Jason251.

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Retro Mars rover illustration by Jack Coggins

Picture of the Day 4/9/2018 - Retro Mars rover illustration by Jack Coggins from "Rockets, Satellites, and Space Travel" book (1958).

Underground human base in Mars cave by Sefrina Arifin

Picture of the Day 2/9/2018 - Small underground human base in a Mars cave by Indonesian environment artist Sefrina Arifin.
More of his art here.

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Mars colony with domed gardens and spaceport by Duncan Li

Picture of the Day 31/8/2018 - Human colony on Mars with domed gardens and a spaceport by Australian concept artist Duncan Li. More of his art here.

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SpaceX BFR spaceship approaching Phobos by Mack Crawford

Picture of the Day 26/8/2018 - SpaceX Big Falcon Rocket (BFR) spaceship (BFS) approaching Phobos by digital artist Mack Crawford (brickmack). More of his space concept art here.

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Woman and child arriving to Mars by Alexander Alza

Picture of the Day 22/8/2018 - Woman and child arriving to make a new home on Mars by environment artist Alexander Alza.
More of his art here.

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Exterior and interior of a house on Mars by Evexoian

Exterior and interior view of a tube-shaped house on Mars by Canadian digital artist Evexoian. More of his art here.

Mars colony on the edge of a canyon by Tomas Honz

Picture of the Day 16/8/2018 - Mars colony built on the edge of a canyon by Czech digital artist Tomas Honz. More of his art here.

Mars colony style resort at Wadi Rum by Chad Oppenheim

Design of a desert resort at Wadi Rum, Jordan by American architect Chad Oppenheim looks a lot like possible human colony on Mars carved into a cliff :)