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The campaign however must go on, especially because I have added more regular features to my daily workload. In addition to my daily never-ending reporting on space exploration and science, my regular launch reports, my monthly sunspot updates, the regular cool images, and the evening pauses I post each evening, I have now added a daily weekday post I have entitled "Today's blacklisted American." Its goal is not to discuss policy or politics, but to note the endless examples occurring across the United States where some jack-booted thug or thugs think it is proper and acceptable to censor, blackball, cancel, and destroy an innocent American, merely because that American has expressed or holds an opinion or is of a race or religion that is no longer considered acceptable to the dominant leftist and bigoted culture. I want to make clear to every American that a large number of your fellow citizens no longer believe in the enlightened concept of freedom of speech or the idea of treating each person by the quality of their character.

 

Instead, they wish to shut you up, and oppress you if you happen to disagree with them or have the wrong skin color. This evil must be exposed.

 

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Lava tubes on Alba Mons

Lava tubes on the western slope of Alba Mons

During oral presentations today at this week’s 50th Lunar and Planetary Science Conference in Texas, scientists revealed [pdf] a map showing what they believe are numerous lava tubes flowing down the western slope of the giant Martian volcano Alba Mons.

The image on the right is taken from their paper. The red lines indicate collapsed tube sections, maroon collapsed sections on a ridge, and yellow volcanic ridges, which I assume are external surface flows. From their paper:

Lava tube systems … occur throughout the western flank, are concentrated in some locations, and are generally radial in orientation to Alba Mons’ summit. Lava tubes are typically discontinuous and delineated by sinuous chains of elongate depressions, which in many cases are located along the crests of prominent sinuous ridges. Lava tube systems occur as both these ridged forms with lateral flow textures and more subtle features denoted by a central distributary feature within the flat-lying flow field surface. Significant parts of the sinuous volcanic ridges show no collapse features, indicating a distinctive topographic signature for Alba Mons’ lava tubes.

Alba Mons is in some ways the forgotten giant volcano on Mars.

Overview map of Alba Mons

It is part of the same volcano region of all the giant volcanoes, sitting north of Olympus Mons and the more well-known chain of three volcanoes to Olympus Mons’ east. Unlike those volcanoes, Alba Mons is less distinct and thus not as dramatic. Instead of rising to a great height, it is spread over a much larger area, with a much more gentle slope on its flanks. The map to the right shows this region, with the location of the lava tube image above indicated by the white box.

These remnant tube sections suggest that the lava tubes flowing down from Alba Mons were quite long, far longer than anything found on Earth.

A total length of ~12,000 km [~7,500 miles] for 331 lava tube systems has been determined for the study region, with 47.3% defined by collapse features. Further mapping may link some of the currently mapped systems together, increasing maximum lengths from the current ~400 km [~250 miles] (and reducing the total number of lava tube systems). The currently mapped population of lava tube systems has a mean length of 36.2 km [22.5 miles], mean relief of 0.31 km, and mean surface slope of 0.51°

This research has only located tube sections that have either collapsed or are expressed as a ridgeline. It has not found any actual underground voids. However, I would suspect that many of the collapsed sections are connected with sections that remain unchanged and run for miles underground.

Pioneer cover

From the press release: From the moment he is handed a possibility of making the first alien contact, Saunders Maxwell decides he will do it, even if doing so takes him through hell and back.

 
Unfortunately, that is exactly where that journey takes him.

 
The vision that Zimmerman paints of vibrant human colonies on the Moon, Mars, the asteroids, and beyond, indomitably fighting the harsh lifeless environment of space to build new societies, captures perfectly the emerging space race we see today.


He also captures in Pioneer the heart of the human spirit, willing to push forward no matter the odds, no matter the cost. It is that spirit that will make the exploration of the heavens possible, forever, into the never-ending future.

 
Available everywhere for $3.99 (before discount) at amazon, Barnes & Noble, all ebook vendors, or direct from the ebook publisher, ebookit.
 

One comment

  • Max

    These are surface lava tubes, the mountain is probably honeycombed miles deep with more tubes that were covered by lava flow and forgotten. A future metroplex housing millions of colonist, farms, animals with room to grow.

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