M Thomas Apple Author Page

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

How do you do it without gravity?

March 18, 2022
MThomas

Or, as I’m sure was unintentionally titled, ”Nasa probing people having sex in space.” 🤦

Ya know, I’m pretty sure we need to figure out “this whole food-air deal” first (to quote comedian Bill Hicks).

“The US space agency confirmed that there were currently no plans for a field or project office to explore the topic in any detail but that could change as we get closer to putting humans on Mars.“

Uh-huh.

Priorities…

How do we find ET? Look for pollution…

February 24, 2022
MThomas

CFCs in the atmosphere above the North Pole.

“We give off waste heat (from industry and homes and so on) and artificial light at night, but perhaps most significantly, we produce chemicals that fill our atmosphere with compounds that wouldn’t otherwise be present. These artificial atmospheric constituents just might be the thing that gives us away to a distant alien species scanning the galaxy with their own powerful telescope.”

https://phys.org/news/2022-02-webb-telescope-civilizations-air-pollution.html

Or, as Futurism puts it: “SCIENTISTS ALREADY PLOTTING HOW James Webb COULD DETECT ALIEN CIVILIZATIONS WHOA.”

Just. Settle down, wouldja. Sheesh.

Scientists have proposed aiming the James Webb space telescope the Trappist system, specifically Trappist-1e.

Really hope this isn’t what they find…

Purple rocks on Mars

February 5, 2022
MThomas

SuperCam showed that the coatings are enriched in hydrogen and sometimes magnesium. In addition, images from Mastcam-Z suggest that they also contain iron oxides. Both the hydrogen and iron oxides point to past water being involved in the formation of the coatings. That shouldn’t be too surprising, perhaps, since this area in Jezero Crater used to be a lake a few billion years ago.

https://earthsky.org/space/purple-rocks-mars-perseverance-rover-desert-varnish/

The rocks resemble so-called desert varnish, which protect microbes from the sun’s radiation. It’d be interesting to find out whether cyanobacteria that once existed on Mars did this…but the four billion year old question is, how did those bacteria get there in the first place?

Should Pluto and Ceres be “planets”?

January 3, 2022
MThomas

Demoted by the IAU in 2006, the Once and Future “9th planet”

…a study announced in December from a team of researchers in the journal Icarus now claims the IAU’s definition was based on astrology — a type of folklore, not science — and that it’s harming both scientific research and the popular understanding of the solar system.

I’m not sure I agree that moons of Jupiter and Saturn should be classified as “planets,” but frankly I see little difference between “dwarf planets” and “planets.”

Plus it wrecks the song I learned to remember the order…

https://www.nbcnews.com/science/space/pluto-planet-debate-rages-rcna8848

Water Bears in Space! Uh. Again.

November 12, 2021
MThomas

Hang on, I think I’ve seen this before…

Oh.

Not such a great idea, then, to send them on an interstellar cruise

Sigh.Way behind. Again.

September 18, 2021
MThomas

OK, I readily admit that I am once again waaaay behind on my scifi blogging.

At some point last week, I looked up from the mass amounts of work I had left to do and went, “Uh. August 21st? Was that really the last time I posted?”

Uh. Yup.

😣

I’ll do my best to get the rest of Riss’s story online on a biweekly basis, like I promised I would.

But promises…

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.

X-Rays from Uranus!

April 5, 2021
MThomas

Two-ringed and sideways gas giant

The gag practically writes itself…

…but seriously, this is neat. One source of the X-Rays is the Sun (it also bounces off of Jupiter and Saturn). But there may be yet another source…perhaps the rings of Uranus or the planet itself.

And no, it’s not really pink. That’s just a Chandra X-ray image.

Shame, really.

https://www.nasa.gov/mission_pages/chandra/images/first-x-rays-from-uranus-discovered.html

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