planets | M Thomas Apple Author Page

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…

Weebles wobble — and so does Mars

February 5, 2021
MThomas

Looks like Mars doesn’t spin perfectly on its axis. In fact, it wobbles.

And no one knows why.

This makes Mars only the second planet in our solar system to exhibit what’s called the “Chandler wobble.”

The other planet?

Why, Earth, of course.

(And, no, nobody knows why. Hmm. Chandler?)

Sorry, Venus is just a lot of gas

February 4, 2021
MThomas

There’s a reason I didn’t post a while ago about the supposed “there’s life in the clouds of Venus” finding.

It was just a big load of gas.

Sorry, folks. Venus is a big rotten egg. 🥚

https://www.nbcnews.com/science/space/signs-life-venus-might-just-be-ordinary-sulfur-gas-n1256739

Boldly going where we already went fifty years ago

January 24, 2020
MThomas

🖖

https://www.bbc.com/news/world-us-canada-51245262

Two men make “Earth sandwich” 20,000 kilometers apart

January 20, 2020
MThomas

File under “strange reasons to study Earth science in school” and “things to do when you have far too much free time.”

www.bbc.co.uk/news/world-asia-51171834

It’s a Nice Model you’ve got there, Mars. Be a shame if something happened to it…

January 12, 2020
MThomas

“Without this instability, Mars likely would have had a mass closer to Earth’s and would be a very different, perhaps more Earth-like, planet compared to what it is today.”

Damn you, Jupiter and Saturn! Why couldn’t you have just stayed in your orbits and left Mars alone? (Shakes fist futilely at night sky.)

— Read on www.universal-sci.com/headlines/2018/5/10/the-giant-planets-in-the-solar-system-stunted-the-growth-of-mars

The Trappist Family of Planets has a hard core!

August 2, 2019
MThomas

Trappists

In February of 2017, a team of European astronomers announced the discovery
of a seven-planet system orbiting the nearby star TRAPPIST-1. Aside from
the fact that all seven planets were rocky, there was the added bonus of
three of them orbiting within TRAPPIST-1’s habitable zone. Since that time,
multiple studies have been conducted to determine whether or not any of
these planets could be habitable.

What’s up with the boring names?

I propose we call them Liesl, Friedrich, Louisa, Kurt, Brigitta, Marta, and Gretl. The most habitable is Kurt, because he’s so magnetic.

But the star, of course, is Maria.

Buh-DUM-dum.

— Read on www.universal-sci.com/headlines/2018/5/5/one-of-the-trappist-1-planets-has-an-iron-core

No “Planet McPlanetface” option. Sorry.

April 15, 2019
MThomas

planetoid

The three choices fit IAU naming regulations and are associated with mythological creatures and figures that reflect aspects of 2007 OR10’s physical properties, which include rock, water ice, possibly methane ice, and a surface that’s red in color.

Your three choices?

Gonggong (共工, the bringer of floods 洪 and chaos)

Holle (which I always thought was Hulda or Holda)

Vili (which I knew as Wela in English class)

At least these scientists learned an important lesson from our recent past…

22xp-boaty-articleLarge

Info here: www.digitaltrends.com/cool-tech/scientists-launch-public-vote-for-the-name-of-a-distant-world/

Vote here: https://2007or10.name

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