Lunar colony in season 5 trailer of The Expanse

A few days ago the season 5 trailer for The Expanse was released - a political sci-fi series set a few centuries in the future, where humans have colonized the entire Solar system. Mars, one of three competing forces in the universe of The Expanse, was in the spotlight in season 4 of the show. It now seems it is the Moon's (Luna's) turn, which is under the jurisdiction of the United Nations (based on Earth) in the universe of The Expanse. There are several scenes depicting a Lunar colony (Lovell City) in the season 5 trailer:

Cargo ship descending to the Moon:

There is only one scene set on Mars in the trailer:

SpaceX Starship SN8 belly flop maneuver by Bart Caldwell

Picture of the Day 10/10/2020 - SpaceX's Starship SN8 test vehicle performing its "skydiver" belly flop maneuver in the sky above Boca Chica, Texas by American space artist Bart Caldwell, known on Twitter as Neopork. The render is so detailed that it looks almost as an actual photo!

SpaceX Starship at NASA Artemis Base Camp by ICON

NASA has announced it is working with Texas-based 3D printed construction startup ICON "on early research and development of a space-based construction system that could support future exploration of the Moon and Mars. The company has 3D printed communities of homes and structures on Earth and participated in NASA’s 3D-Printed Habitat Challenge, demonstrating a construction method and technologies that may be adaptable for applications beyond our home planet." Both NASA and US Air Force have invested in company's technologies via Small Business Innovation Research (SBIR) contract.

NASA is working, via its Artemis program, to establish a long-term human presence on and around the Moon by the end of the 2020s. Construction and expansion of Artemis Base Camp will require extensive use of lunar resources, including water ice (for life support and rocket fuel) and moon dirt (for building materials).

To accomplish goals of the SBIR contract ICON has teamed up with space design studio SEArch+ and Danish architecture firm BIG in Project Olympus to develop robotic construction concept for NASA's Artemis Base Camp. Here are several conceptual illustrations from the project.

First one depicts a spaceport featuring several 3D printed landing pads and roads, SpaceX's Starship in one of the pads and Blue Origin's Lunar lander with ICON's 3D printer landing in another:

Closeup of illustration's central part:

Here are illustrations of 3D printed habitats:

Underground oasis in a Martian lava tube

Shane Powers (USA) & Linjie Wang (China) have created a design of an artificial underground oasis in a Martian lava tube for Marstopia international design contest held by Eleven Magazine. Their design named "Below Freezing" won the "honourable mention" award in the contest. Its main feature, besides utilizing natural lava tubes, is a vertical transportation system (surrounded by 3D-printed ice walls) to Mars's surface. Martian lava tubes could become very handy in creating large, radiation-protected spaces for future human colonists on Mars.

SpaceX Mars Base Alpha concept by Sotiris

Here is a concept of SpaceX's early Mars Base Alpha by Twitter user Sotiris. The concept features a pair of crew Starships with Falcon 9 style landing legs, several pressurized Mars Cybertrucks, The Boring Company's tunnel boring machine and 3-level habitation modules derived from used Starship propellant tanks and connected in pairs (a questionable idea, we think).

Cutaway of the habitation module:

Canteen at human colony on Mars by Ozgur Saral

Concept of a canteen interior at human colony on Mars by Turkish CG artist Ozgur Saral. More of his art here.

Full demo of the CG concept:

Total Recall (1990) concept art by Ron Cobb

Australian artist Ron Cobb has done concept art for many famous sci-fi movies, as Star Wars, Alien, Back to the Future and countless other. One of the movies he has worked on is a movie known to all Mars fans - Total Recall (1990), stared by Arnold Schwarzenegger, Rachel Ticotin, Sharon Stone and Michael Ironside and directed by Paul Verhoeven. Here are some historic concept art images created by Ron Cobb for the famous movie:

Maglev train connecting Martian colonies

Mars colony exterior

Mars shuttle

Short film: honeymoon trip to the Moon with SpaceX Starship

Two brothers from DeepSpaceCourier have created an animated short film of a newly married couple taking their honeymoon trip to the Moon with SpaceX's Starship. The short film starts with the couple boarding Starship Super Heavy at ocean launch platform; Starship is launched to the Moon and after a few days voyage docks to Lunar Gateway; there the couple switches to a Lunar Starship and lands on the surface of the Moon.

Some images from the short film in chronological order:

Mars colony on both sides of a canyon by Mondolithic Studios

Picture of the Day 5/9/2020 - Modular multi-level human colony on Mars situated on both sides of a canyon by Mondolithic Studios (Chris Wren & Kenn Brown).

Earthscrapers (inverted underground skyscrapers) could be perfect for Mars

When building on Mars you need to seriously consider measures to protect the inhabitants from cosmic radiation. You can cover your very first Martian outpost with few meters of regolith or use expensive materials with radiation blocking properties but for larger structures the obvious choice is to build underground. Lava tubes could be a solution but they are not present everywhere on Mars. So most likely you will need to dig your habitats.

One of the building types perfect for Mars could be earthscrapers (or would you call them marsscrapers on Mars?) - inverted underground skyscrapers with large vertical central void (covered with a transparent dome on the surface) for natural lighting. The living and public space is arranged in multiple levels encircling that central void. Here is an example of such structure designed by Fernando Castiñeira, Hernan Goldfarb, Alejandro Ispani, Alex Nelken, Javier Maratea & Malena Verni for 2007 Skyscraper Competition by eVolo.us

Simple diagram of the design: