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.

(Open link in new tab to view ⇩ in full resolution)

Starman orbiting Mars in his Tesla Roadster

Picture of the Day 3/5/2018 - fan vision of SpaceX's Starman orbiting Mars in his Tesla Roadster; created by Reddit user ComradeIliya.

(Open link in new tab to view ⇩ in full resolution)

SpaceX Big Falcon Rocket approaching Mars; official design

Picture of the Day 23/4/2018 - SpaceX Big Falcon Rocket (BFR) spaceship (BFS) approaching Mars; official design presented by SpaceX's president & COO Gwynne Shotwell at TED 2018 conference. More images of BFR from her presentation here.

Full official schematics for BFR by Elon Musk at IAC 2017

"New Home" on Mars by Mike Winkelmann (beeple)

Picture of the Day 20/4/2018 - "New Home" on Mars by digital fantasy artist Mike Winkelmann, better known as beeple.
More of his art here.

(Open link in new tab to view ⇩ in full resolution)

SpaceX BFR spaceships entering Mars atmosphere

Picture of the Day 21/2/2018 - a painting of two SpaceX's BFR crew spaceships (BFS) entering Mars' atmosphere; created by Reddit user Throwaway__l2.

Space station orbiting Mars by Brad Wright

Picture of the Day 20/2/2018 - Space station orbiting Mars by British concept artist Brad Wright. More of his art here.

(Open link in new tab to view ⇩ in full resolution)

Astronauts inspecting water extractor on Deimos by Maciej Rebisz

Picture of the Day 22/12/2017 - Astronauts inspecting water extractor on Deimos (the farthest and smallest of the two Martian moons) by Polish sci-fi artist Maciej Rebisz. More of his illustrations for Space That Never Was project here.

(Open link in new tab to view ⇩ in full resolution)

SpaceX BFR spaceship above Mars

Picture of the Day 15/11/2017 - SpaceX's BFR spaceship (BFS) above Mars - an image from the video animation of BFS landing on Mars created by Reddit user Hazegrayart.

Martian lander docking with Mars Base Camp by James Vaughan

Picture of the Day 11/11/2017 - Lockheed Martin's Martian lander docking with Mars Base Camp (a manned station orbiting Mars) by photographer and concept artist James Vaughan. More of his aerospace and defense concept art here.

(Open link in new tab to view ⇩ in full resolution)

SpaceX BFR spaceship approaching Mars

Picture of the Day 9/11/2017 - SpaceX's BFR spaceship (BFS) approaching Mars - an image from the video animation of BFS landing on Mars created by Reddit user Hazegrayart.

Human base on Deimos by Manchu (Philippe Bouchet)

Picture of the Day 25/10/2017 - Human base on Deimos (the farthest and smallest of the two Martian moons) by French sci-fi artist Manchu (Philippe Bouchet).

Lockheed Martin's Mars Base Camp concept

In a few hours at 2017 International Astronautical Conference American aerospace, advanced technologies and defense company Lockheed Martin will give an update to its Mars Base Camp concept. If accepted by NASA the Mars Base Camp would be a manned "Mars-orbiting science laboratory where astronauts can perform real-time scientific exploration, analyze Martian rock and soil samples, and confirm the ideal place to land humans on the surface in the 2030s." The proposed mission would send humans to Mars orbit by 2028 and is "designed to be led by NASA and its international and commercial partners."

Recently Lockheed Martin has released some concept images for the mission (open link in new tab to view in full resolution):

SpaceX Mars orbital station by Encho Enchev

Picture of the Day 26/8/2017 - Concept art for SpaceX Mars orbital station by Encho Enchev from Ubisoft.
More of his concept art here.

(Open link in new tab to view ⇩ in full resolution)

Spaceships in Mars orbit by James Vaughan

Picture of the Day 18/6/2017 - Spaceships in Mars orbit by photographer and concept artist James Vaughan. More of his aerospace and defense concept art here.

(Open link in new tab to view ⇩ in full resolution)

HD images from Mission to Mars (2000) movie

Mission to Mars (2000) is a bit weird sci-fi movie where a mysterious Martian structure is found on Mars. When all of the first astronaut crew on Mars is killed by a monstrous sandstorm force a rescue mission is launched from Earth to investigate and bring back possible survivors. They find one barely sane and make contact with the last Martian ship long left in the alien structure.

Despite the weird story Mission to Mars has some of the most memorable Martian movie scenes; here are HD images from them
(open link in new tab to view in full resolution):

Space station orbiting Mars by Ville Ericsson

Picture of the Day 28/2/2017 - An international space station orbiting Mars by Swedish concept artist Ville Ericsson.
More of his fantasy art here.

Space station in Mars orbit by Glenn Clovis

Picture of the Day 22/12/2016 - "Phoenix" space station in Mars orbit by sci-fi artist Glenn Clovis. More of his art here.

(Open link in new tab to view ⇩ in full resolution)

Astronaut looking at Mars by Jean-Michel Trauscht

Picture of the Day 20/12/2016 - Astronaut looking at Mars from the orbit by Brazilian matte painter Jean-Michel Trauscht.
More of his art here.

Mars shuttle concept by Nenad Gojkovic

Picture of the Day 18/10/2016 - Mars surface to/from Low Mars orbit shuttle by Serbian concept artist Nenad Gojkovic. More of his concept art here.

(Open link in new tab to view ⇩ in full resolution)

Fan visualization of Mars Colonial Transporter arriving at Mars