Sunday, June 25, 2023

Spherical underground Mars colony by Michel Lamontagne

One of the weak spots for any domed human colony on Mars would be the enormous pressure difference needed between the higher interior pressure suitable for humans (~ 1 bar) and the near-vacuum exterior pressure of the Martian atmosphere (0.004-0.011 bar). The dome for such a structure should have heavy anchoring deep underground. But there is a much simpler solution - a spherical hermetic structure mostly underground where only the tip of the sphere (visible as a dome) is located above the ground level. Sphere is the strongest geometric shape for containing internal pressure and the structure can be kept in place by the mass put inside the sphere.

Canadian design engineer Michel Lamontagne has created two concept drawings for such a colony where there is only a domed park above the ground level and all the rest of the colony is located below the ground level with a vertical central opening for natural lighting:

Spherical underground Mars colony by Michel Lamontagne
The geodesic surface dome is subdivided into small panes for easier replacement and safety:
Mars colony under a geodesic dome by Michel Lamontagne

Thursday, June 22, 2023

Valles Marineris compared to USA

Valles Marineris (or Mariner Valleys) canyon system on Mars is one of the largest canyons of the Solar System. It is located along the equator of Mars and stretches for nearly a quarter of the planet's circumference. Valles Marineris is more than 4000 km (2500 mi) long, 200 km (120 mi) wide and up to 7 km (23,000 ft) deep.

Here is an infographic created by NASA comparing Valles Marineris to the territory of Contiguous United States (48 US states without Alaska and Hawaii) for scale:

Valles Marineris (Mars) compared to the territory of USA

Saturday, June 10, 2023