Disappearing Stars and Other Cool Science Stuff

A ‘monster’ star 2 million times brighter than the sun disappears without a trace

In 2019, scientists witnessed a massive star 2.5 million times brighter than the sun disappear without a trace. Now, in a new paper published today (June 30) in the journal Monthly Notices of the Royal Astronomical Society, a team of space detectives (see: astrophysicists) attempt to solve the case of the disappearing star by providing several possible explanations. Of these, one twist ending stands out: Perhaps, the researchers wrote, the massive star died and collapsed into a black hole without undergoing a supernova explosion first — a truly “unprecedented” act of stellar suicide.

Long-term exercise impacts genes involved in metabolic health

This suggests that even short training programs of 6–12 months are enough to positively influence the health of people suffering from metabolic disorders,” says last author Carl Johan Sundberg, professor at the Department of Physiology and Pharmacology, Karolinska Institutet. “The study identifies important ‘exercise-responsive’ genes that may play a role in metabolic diseases. Continue reading “Disappearing Stars and Other Cool Science Stuff”

Treading Lightly: Growing Greens

Here in the Treehouse, we have to get by on what’s at hand. This series explores simple, nature-friendly alternatives to conventional products and practices.

When you’re in a treehouse, in the middle of the woods, there is no popping down to the corner store for last-minute whatevers. Our excursions are few and far between, so we are coming up with ways to compensate for the lack of easy access. We find this has also led us to try some more eco-friendly methods – in this case, for acquiring greens.

Gardening at the base of the tree is not an option. Never mind the climbing up and down; anything we might try to grow on the forest floor would be quickly snarfed by the local fauna. But I want lettuce. Fresh green things to eat. Greens that I know are uncontaminated.

Hydroponic tower garden

So I started growing lettuce in my office. This tower rack sits in the corner, taking up a 2’x3′ footprint. It’s got lettuces up top, seedlings in the center, and bok choy and basil plants on the bottom. All of these (well, not the seedlings yet) produce amazing amounts of wonderful leaves.

Fresh veggies, especially greens, start to lose nutritional value the moment they’re picked. In 24 hours, they’ve lost 90% of their nutrition. By growing them here, I have clean, absolutely fresh greens year-round, with a carbon footprint of…well, probably zero. The lights are LEDs and are powered by our solar system. Each lettuce plant uses around two gallons of water during its lifetime, compared to more than twenty-five gallons it takes to grow a head of lettuce in the ground.

The low carbon footprint is important to me, almost as important as the clean food. That Romaine heart that I used to buy for a couple of bucks had to travel from California, and was probably over a week old, maybe a couple of weeks old, by the time I brought it home. And while a couple of bucks seems fairly inexpensive, it’s a lot more than the cost of my lovely home-grown lettuces.

Growing these darlings is a bit different. You don’t wait for the lettuce to get big and then yank it from the garden. Instead, as soon as it’s big enough, you start harvesting the outer leaves, a few at a time. (I have been known to snack on a leaf now and then.) The plants get harvested this way for two or three months. When they’re tired, they bolt, and I retire them with thanks and a bit of ceremony. Each plant has probably given as much lettuce as two or three commercial lettuce heads, by then.

It’s a different way of gardening, and a different way of interacting with food. I’m very aware of the interdependence between me and my plants. I feed them and make sure they have enough light and don’t get too hot, and in return they feed us. Mutual giving.

 

On deciding what to read

I was working on a novel (questing in a strange world is not the same as anyone expects it to be, including the inhabitants of the city in which a group of people quest) and the obvious hit me over the head, hard. I’m going to hit you over the head with it, because I’m kind in that way.

Any novel contains world building. We, as readers, enter the world the writer has written.

That was not the head-hitting thought. That’s an element of my current research. A tiny one.

All writers build worlds. Some of us have worlds that look like our own world (for example, in literary fiction) and some have strange worlds where it’s unsafe to walk (in horror, in science fiction, for instance). Most writers find their place in between the extremes (for extremes are harder for readers – I’ll get to this, it’s part of the head-hitting) and their novels fit into a genre partly according to the nature of the world and how it’ written and partly due to the complex processes of marketing and sales.

The reader finds their favourites and devours book after book and everyone’s happy.

Except… that’s not true. Which bit of that last paragraph isn’t true? The ‘everyone’s happy’ bit.

When we don’t want to use too many tricks to lure people into our worlds or when we want the reader to feel comfortable in the world of the novel or when we want the reader to focus on the action and not the background to it, we draw from mainstream culture. We draw, mostly, in fact, white male US culture. It’s the easiest to draw from and it’s also the easiest to market. Continue reading “On deciding what to read”

How Many Alligators Are There in Florida? 1.25 Million!

So, what happens when you take a 5th generation southern California native and uproot her 2600 miles away to the semi-tropical southwest Florida gulf coast?

Well … these are the “selected” shells. I limit myself to one handful per trip, only ones I’ve never gotten before. I now know the names of many of these. The orange ones are scallops. Like the little ones we eat.

So I really like Florida. It reminds me of when I was a kid in California. It’s not crowded like L.A. and Orange County have become. There’s still plenty of room for enthusiasm and exuberant displays of individualism.

This here is Gatorz in Port Charlotte. A homey, down to earth kind of place.

 

This here below is a “gator” as in 6-foot alligator I saw crossing a divided 4 lane highway in Englewood. We have a small one that lives in one of our nearby ponds.

So I was driving down the highway on the way to walk around downtown Venice, FL and this car is stopped in front of me. Why is he stopped? What’s going on … Continue reading “How Many Alligators Are There in Florida? 1.25 Million!”

Juneteenth

There is talk these days about making Juneteenth a national holiday to mark the end of slavery in this country. And while setting a holiday doesn’t end abusive policing or systemic inequality or even microagressions, the history around Juneteenth makes talking about it a useful focus for addressing the racism that white people want to pretend don’t exist.

It could be argued that the day the Emancipation Proclamation became effective — January 1, 1863 — is a more appropriate holiday, since that’s when slavery became illegal in the states that were in rebellion against the United States (though not in the slave states still in the Union, such as Maryland). Though the day of ratification of the 13th Amendment, which legally abolished slavery in the United States — December 6, 1865 — is even more appropriate, because that’s when slavery was legally abolished across the entire country.

But I think Juneteenth makes the most sense. First of all, it is a celebration started by African Americans, who, as the people most affected, should set such dates. The Black people of Galveston began holding celebrations on June 19, 1866. Unlike most holidays, which are set by those in power and often for political reasons, this one came from the people affected. That makes the day powerful. Continue reading “Juneteenth”

What We Lose, What We Gain

About 15 years ago most of my jewelry was stolen. None of it was very valuable, although there were some pearls and jade and a little amber, and a lovely pair of moonstone in gold stud earrings that had some monetary value. But, as is the way of things, each piece had a story that was part of my life. That was their real value, and hence the deepest loss. I’d had some of them since my childhood, and some had been gifts from loved ones who’ve since died. Some of it was my mother’s.

I went through the expected rage and frenzy, scouring local flea markets in the forlorn hope that I might spot a piece or two. Of course, I did not. When that stage had run its course, the police report filed (and, doubtless, immediately tossed), anger turned to grief, and grief to acceptance, and acceptance to looking in a new way at what I’d lost.

I wrote in my journal that although the thieves had taken bits of minerals, crystals, shells, fossilized tree sap, they could not steal:

the stories in my mind
the books I’ve written
my children
the redwoods
my dreams
my friends
their kindness and generosity to me
my capacity for joy…

Slowly, over the years, I have acquired a new collection. It’s smaller and more suited to who I am now. I discovered a few things from my mother, tucked away in an old cigar box with some broken bits and things I didn’t wear. Friends and family surprised me with simple, beautiful pieces: a strand of black pearls, an amber pendant, a necklace of silver and garnet dangles, tiny, amazingly delicate garnet earrings. I went through a period of needing “replacements,” and then letting them go. My daughters and I have swapped a number of pairs of earrings. It’s such a delight to pass them on. And to realize I don’t truly need any of this.

What I need are the people I love, and who love me. What I need is to write the stories in my heart. What I need is to work for a better world for everyone. In light of the covid-19 pandemic and the #BlackLivesMatter protest movement, my priorities have sharpened.

I look at what I have, what I have lost, what cannot be taken from me, what I have gained. Yes, I enjoy beautiful things. How much more dear to me are the memories that come with them. And how much more precious are the lives of those who are oppressed and terrified and suffering today.

 

Clarinetist Anthony McGill Takes Two Knees

Following the Boston Pops musicians-at-home tribute to COVID-19 first responders, I was blown away today by this solo performance at home by the New York Philharmonic’s principal clarinetist Anthony McGill, of “America the Beautiful”—beautifully and subtly re-tuned to convey Mr. McGill’s sorrow and anger at racial injustice. Watch and listen to it on a device with good sound; it’s worth it. McGill ends the piece with… well, I’ll let you watch and see.

McGill’s statement inspired this haunting and inspiring rendition of Sebelius’s Hymn from Finlandia, by music students and faculty from four different music schools, all taking two knees in protest of injustice.

The story appears on NPR’s Here and Now, with an interview by WBUR radio’s Robin Young. The interview is well worth a listen:

 

A moment of thought

This fortnight I’ve done so many things that I’ve lost track.

I’ve written the poorest drabbest first draft of a novel so that someone can check something in it before I polish the novel up. Last time I did this, the novel was approved of by the friends doing all the checking and I edited it lightly and suddenly it was in print (that was The Year of the Fruit Cake). This novel will need more editing that than because my gut says that it has a sagging middle. The story tells of a group of strangers that meet on a dying island and do the hard work to make themselves into such a group of friends that they will all get through the impossible even if they have no idea how they’re going to get through that impossible.

I guess I need to find a publisher for it after I’m happy with it, but that’s then.

Some writers write under contract. Me, I really like writing work that balances and expresses my research. That means it’s fairer on publishers if I have a complete novel to offer them, so contracts generally come after my work is finished. It also means I can write what I need. If it doesn’t get published, that’s my risk – so far this hasn’t happened. So far small and medium press have been very happy to take my work. (it doesn’t matter how published I am, I feel it’s always ‘so far’ – I can’t predict tomorrow.)

My novel doesn’t read like research. It’s not supposed to. Continue reading “A moment of thought”

Now I Can Cross Watching Astronauts Blast Into Space Off My Bucket List

I never thought I’d see a crewed rocket blast into space at Cape Canaveral, yet — here I am. I also never thought I’d live in Florida, and likely would never even visit the state, yet — here I am.

I do remember Apollo 11 landing on the moon and I remember Neil Armstrong and Buzz Aldrin planting the flag. I recall sitting on the living room floor in our house in the orange grove cross-legged, eating an Oreo and drinking a 6-oz glass of milk. The living room walls in the grove house were cedar panels. I remember Rebel sitting next to me, his big head and floppy ears resting on his big old paws. Rebel was a phlegmatic Basset hound with deep brown, mournful eyes. I had learned to walk by clinging to his ears and toddling.

It seemed very easy for these two guys to hop out of the Lunar module and caper around the moon. At age seven, I thought the big rocket was just like the small rockets one of our teachers had launched at school. In my mind, flying to the moon was maybe a little farther than flying to Paris. My child’s mind told me that the astronauts were just like The Little Prince only instead of a nice costume and scarf, they wore puffy, funny suits.

The Little Prince by Antoine St. Exupery

This is in my child’s mind. All through school, we drew peace symbols, stuck “ecology” stickers on our notebooks, and learned about the Apollo astronauts. I was certain that by the time we were all grown up, the world would be a beautiful, green, peaceful place, and astronauts would be flying all over the universe.

Just like Star Trek.

Continue reading “Now I Can Cross Watching Astronauts Blast Into Space Off My Bucket List”

A Little Bit of Hope

I felt a little hope this week.

The uprising in the streets of our country (and much of the rest of the world) brought me that hope.

Or more accurately, the reaction to that uprising, which for once veered away from the usual tut-tutting about property damage and instead focused on how the police attacked peaceful protestors. The blatant racism and casual police violence that have always been a part of our society are now under serious scrutiny.

There is a call for real and systemic change in how we handle public safety, something I’ve wanted to see for many years and yet never expected to see. Sometimes, despite being a science fiction writer, I lack imagination when it comes to change in my own world. Continue reading “A Little Bit of Hope”