M Thomas Apple Author Page

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

Geminids, Geminids, Geminids!

December 15, 2025
MThomas

It’s been several months since I last posted…too much work and no play!

Until this past Sunday. Whew.

After a morning lecture about ancient Japanese myths and “deliberately forgotten” kings (maybe), I was grateful to be able to take a quick power nap…

…so that the family could go up a nearby mountain and watch the Geminid meteor shower. (By “mountain,” I mean about 640m/2100ft.)

After a brief lecture/quiz by a staff member at our local culture center, we stayed outside, lying flat on the ground, for over an hour. And, yes, it was cold, despite the sleeping bag and thermal underwear. I saw three shooting stars. Not nearly as many as I’d hoped.

After we got home and took evening baths, the kids went out on our second-floor balcony and found out that the night view was even better at home than on top of a mountain! At least they knew what to look for, thanks to the culture center event.

Although the peak is Sunday night between midnight and 2 a.m., the meteors are still visible to some degree the rest of this week.

And by “meteor,” I mean the size of grains of rice. Look to the eastern sky, just a bit to the northwest of Orion, to find the Twins (Castor and Pollux in Greco-Roman mythology).

For more on the origins of the Geminids, check out the JAXA mission to Phaeton, the parent body asteroid. It’s DESTINY!

Fifteen years and counting…

February 21, 2025
MThomas

Hi, everyone. I know I haven’t posted in a while now (about three months).

Things happened. I’ll see if I can deal with that in a post this weekend before returning to regularly blogging about astronomy and etc.

Winter is still here! (In the northern hemisphere.) Going on walks and hiking in 3C windy weather only makes hot chocolate taste that much better…

☕️

New study of moons of Uranus suggests life

November 14, 2024
MThomas

Note: this is artwork and not an actual image

The planet Uranus and its five biggest moons may not be the dead sterile worlds that scientists have long thought.

Instead, they may have oceans, and the moons may even be capable of supporting life, scientists say.

https://www.bbc.com/news/articles/cgk1333k0ypo

Cue the jokes in five…four…three…

“So, you mean there really is life in…ah…”

Note that this is not from new data. It’s a re-analysis of what Voyager 2 sent back decades ago. Basically, it just had a bad day, with magnetic storms screwing up the scan.

Still…

There could be moons there that could have the conditions that are necessary for life, they might have oceans that below the surface that could be teeming with fish!

I think this is a bit of an exaggeration…

A taurid of meteorites now…

November 12, 2024
MThomas

This is over China four years ago…

The Taurids meteor showers get their name because the shooting stars appear to stream from a point in the sky where the Taurus constellation is located. Taurid meteors can be seen from pretty much anywhere on the planet except the South Pole.

https://www.nbcnews.com/science/science-news/meteor-showers-taurids-orionids-leonids-november-shooting-stars-rcna177143

I waited too long to post this! The meteor shower peaked last week, but might still be visible. The Orionids ended already (they appeared to fall from, you guessed it, the constellation of Orion, while the Taurids came from Taurus.

If you can’t see them, not to worry: the Leonids are on their way from next week (falling from, right again, Leo).

Very imaginative, these names. At least it makes them easier to spot. ☄️

That’s no mo…why, yes, it is…

October 7, 2024
MThomas

The scientists hope to learn about the asteroid’s surface composition and how fast it rotates, he said. Those observations could help researchers figure out its origin, which in turn could shed light on other asteroids, including ones that could be dangerous to Earth.

https://www.nbcnews.com/science/space/mini-moon-asteroid-to-orbit-earth-temporarily-rcna172264

This is of course not the first “mini-moon” to have been discovered. These are wandering asteroids that get trapped briefly by Earth’s gravity well before being flung back into space.

Read the article for more information about the “school-bus sized” 2024PT5!

Venus used to have as much water as Earth. What happened?

May 7, 2024
MThomas

Over time, that water has nearly all been lost. Figuring out how, when and why Venus lost its water helps planetary scientists like me understand what makes a planet habitable — or what can make a habitable planet transform into an uninhabitable world.

https://theconversation.com/venus-is-losing-water-faster-than-previously-thought-heres-what-that-could-mean-for-the-early-planets-habitability-229342

The process in which Venus lost most of its water is called “hydrodynamic escape.” When Venus got too hot, the hydrogen in its atmosphere left. (The linked article explains this using a metaphor of having too many blankets on your bed.)

However, Venus is still losing hydrogen, even though there is too little of it for hydrodynamic escape to work. So, logically, there must be another process at work: “HCO⁺ dissociative recombination,” in which individually positively charged atoms of hydrogen, carbon, and oxygen in the atmosphere react with negatively charged electrons. The process was first examined on Mars, and based on a reexamination of results from previous missions (Pioneer Venus 1 and Pioneer Venus 2), the same research group thinks it’s time to try it on Venus…perhaps a first step to seeing whether Venus had life at some point.

Can you say “Catch-22” in space?

April 30, 2024
MThomas

Japanese space company Astroscale Holdings Inc has unveiled what it calls the world’s first publicly released close-up image taken of space debris, hailing it as progress toward understanding the challenges posed by trash orbiting Earth.

https://japantoday.com/category/tech/update1-japan-startup-reveals-world%27s-first-close-up-space-debris-image?

Hmm.🤔 what will happen to the rocket and the satellite that took this picture?

How to photograph a solar eclipse

March 29, 2024
MThomas

The eclipse begins as a small notch slowly appears along one edge of the Sun. During the next hour, the Moon gradually covers more and more of the Sun’s bright disk. You’ll need a Solar Filter to both view and photograph the partial phases. 

https://www.mreclipse.com/SEphoto/SEphoto.html

On April 8, 2024, there will be a total solar eclipse across parts of North America. It starts on Mexico’s Pacific coast and ends on Canada’s Atlantic coast. (So, no, it’s not just “from San Antonio to the Canadian border” as one article puts it).

I’m a little jealous of friends and family in the path. The eclipse lasts for over four minutes this time — if you’re in the area, enjoy!

And send me a photo or three if you can 😁

Bringer of Light – pre-order now!

March 13, 2024
MThomas

See Children of Pella (series) for details.

That’s no m…no, wait, sorry, it is!

February 25, 2024
MThomas

Astronomers have found three previously unknown moons in our solar system — two additional moons circling Neptune and one around Uranus.

https://www.nbcnews.com/science/space/astronomers-spot-new-tiny-moons-neptune-uranus-rcna140285

One takes nearly 27 years to circle Neptune.

The “new” moon of Uranus is only 8 kilometers (5 miles) in diameter.

And there are likely many more yet to be discovered.

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