M Thomas Apple Author Page

Science fiction, actual science, history, and personal ranting about life, the universe, and everything

AstroCrete…a “blood-curdling” building technique for Mars

September 18, 2021
MThomas

The blood, sweat, and tears of pioneering astronauts could literally turn Mars regolith into building materials.

First, however, they’d need to get the 3D printers there…

https://www.republicworld.com/technology-news/science/astronaut-biocomposite-materials-could-grow-successful-settlements-on-mars-study.html

Mars has a really thick skin

July 28, 2021
MThomas

Well, OK, technically it’s the mantle, not the crust.

But it is thick. Super thick. And no gradations like the Earth.

Extrapolating to the known surface geology of the rest of the planet, this suggests an average thickness of between 24km and 72km. By contrast, Earth’s average crustal thickness is 15-20km.

https://www.bbc.com/news/science-environment-57935742

So what does this mean?

For one thing, it probably explains why there’s no breathable atmosphere on Mars.

Mars never developed a global magnetic field to block solar radiation. So it’s atmosphere was basically ripped right off.

And any terraforming attempts in the future would fail on a global scale. But maybe locally it might work…

Destination: Red Planet

June 27, 2021
MThomas

Like other nations, China “regards Mars exploration as the preferred destination for deep space exploration,” Wang said.

https://abcnews.go.com/amp/Technology/china-unveils-ambitious-roadmap-human-mars-exploration/

China’s plan calls for setting up a permanently occupied base and a fleet of interplanetary craft. Probably it’s a good idea to first see whether it can meet its goal of landing people on Mars in 2033.

Of course, China is “willing to join hands with our counterparts and partners all over the world,” but it’s unlikely NASA, JAXA, ESA, and the UAE and other countries not named Russia will “cooperate.”

The next space race is here. Just wait until multinats actually decide asteroid mining is worth the risk and expense.

Ion engines are no longer sci-fi

June 19, 2021
MThomas

The inclusion of an ion propulsion system in a long-running, Earth-orbiting space station will give researchers a chance to test out the tech while astronauts are still close to home — and if it works as hoped, it could one day ferry explorers to Mars and even more distant destinations.

https://www.freethink.com/articles/ion-propulsion

That’s a big “if.”

Another is what the price will be, since no doubt this neat new tech won’t easily be shared among nation-states.

Just yesterday Chinese astronauts entered their new space station for the first time. They weren’t allowed into the ISS. Now they don’t need the ISS.

The old rivalries will follow humanity into space…but for how long will the rivalries remain…

“Wright Brothers’ moment” – helicopters on Mars

April 19, 2021
MThomas

“We together flew on Mars. We together have our Wright brothers moment.”

https://www.washingtonpost.com/technology/2021/04/19/nasa-ingenuity-helicopter-mars/

Yeah, yeah, I know. Technically, a German immigrant in Connecticut flew a plane before Orville and Wilbur.

But PR counts. Kudos, NASA!

Still, they persevered!

February 18, 2021
MThomas

Great job, NASA! Landing on Mars is always a tricky business.

Now all Perseverance has to do is find traces of life, save it without contamination, and then wait for another rocket, another rover, and a satellite to get in orbit so the samples can be sent back to Earth.

Piece of cake, right?

https://www.bbc.com/news/science-environment-56119931

Maybe there is Hope, after all

February 10, 2021
MThomas

Congratulations, UAE! The Hope Probe (al-Amal) successfully entered Mars orbit on February 9th.

Made in the US (Boulder, Colorado) and the United Arab Emirates (Dubai) and launched from Japan, it shows what hat can be accomplished through international cooperation instead of competition.

Maybe it is truly Hope, after all, and not just for Arab states.

Nature

CNN

BBC News

Magnetic reconnection plasma thruster: Not too fast, not too slow, juuuust right

February 4, 2021
MThomas

A crewed mission to Mars may be more practical thanks to a new rocket concept developed by Fatima Ebrahimi, a physicist at the US Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL), that uses magnetic fields to generate thrust.

https://newatlas.com/space/magnetic-reconnection-rocket-thruster-concept-spaceflight-mars/

Looks good so far…

…although it’s just a computer simulation right now and the magnetic thruster model hasn’t even been built yet.

Ah, well, just repurpose an existing ion thruster, right?

Hmm. I’m not a rocket scientist, but.. 🚀

Yet another conjunction of the Moon, Mars, and, uh…

January 22, 2021
MThomas

The Planet That Shall Not Be Named?

Hey, everyone! If you look up at the right time, you can…

Uh. Yeah, anyway.

https://www.space.com/uranus-mars-moon-conjunction-january-2021

Six Space Events to Look Forward To in 2021

January 5, 2021
MThomas

And it comes from a travel mag. Talk about confidence!

https://www.travelandleisure.com/trip-ideas/space-astronomy/space-missions-2021

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