@mendellgreg.bsky.social
Reading & writing; science & scifi; gravitational waves & astrophysics; star trek; spouse & dad; 📖🖊️✨🔭🖖🙂 https://amazon.com/author/gregoryallenmendell
New rug, new books! 📚✨ #reading #books #booksky
22.11.2025 19:41 — 👍 6 🔁 0 💬 1 📌 0
A starfield is shown above a mountain peak. Just above the mountain and extending up toward the upper right is a blue-tinted tail of a comet. The comet's head is just to the left of the peak. Please see the explanation for more detailed information.
🔭 Comet Lemmon's Wandering Tail
Image Credit: Ignacio Fernández
apod.nasa.gov/apod/ap25111...
It’s great to finally have a copy of this amazing Indigenous science fiction story by Chag Lowry and Corey Gray, inspired by Corey’s mom, and with artwork by Eli Hyder! Corey is a colleague from my LIGO Hanford Observatory days! #reading #scifi 🌌📚✨
16.11.2025 19:12 — 👍 1 🔁 0 💬 0 📌 0
Catherine Asaro’s novels are filled with vivid worlds & inventive science! Her characters are smart & strong, yet vulnerable. Very traumatic events occur, but her stories center on society & inner conflict! They also entertain! Check out her scifi + romance! 📚❤️ #reading #scifi #books #booksky
14.11.2025 19:44 — 👍 2 🔁 0 💬 0 📌 0
Very bright pillars of green, blue, pink, purple and red light. A river below and a tree in the foregroung.
Last night’s #auroras lit up skies across the world — and our community captured it all! Join us at 12:30 p.m. CST (18:30 UTC) as we share some breathtaking photos. We'll explain what caused this geomagnetic storm and whether the auroras might return tonight. Join us!
buff.ly/mveCCoV
📸 JD Smith.
Once again, if only … #TrekTuesday
11.11.2025 19:52 — 👍 4 🔁 2 💬 0 📌 0Beautiful!!!
09.11.2025 19:47 — 👍 1 🔁 0 💬 1 📌 0
A little poetry & lyrics for the weekend! 📖✨ #reading #poetry #books #booksky
08.11.2025 19:53 — 👍 4 🔁 0 💬 0 📌 0
I feel like it’s time to revisit one of my all time favorite novels, The Dispossessed by Ursula K. Le Guin! 📖✨ #reading #scifi #books #booksworthreading #booksky
06.11.2025 19:04 — 👍 19 🔁 2 💬 3 📌 0
A Look Inside #Europe’s Most Enchanting #Libraries by Photographer Thibaud Poirier #photography #booklover
Link for more: www.thisiscolossal.com/2017/06/ench...
Mary Shelly ->Mary Shelley 🙄
04.11.2025 20:36 — 👍 2 🔁 0 💬 0 📌 0
In 1826, Mary Shelly published her dystopian vision of the 21st century! I think she probably was a time traveler! #timetraveltuesday #reading #scifi #books #booksky
04.11.2025 18:40 — 👍 2 🔁 0 💬 1 📌 0
I loved this brilliant dystopian novel by @jmoodyburnbrush.bsky.social! It continues the story of memory manipulation in a divided society, as the characters face secrets while struggling for change! There’s even a little romance that works due to the truth of the emotions! #reading #books #booksky
02.11.2025 19:31 — 👍 4 🔁 0 💬 0 📌 0
Latest used bookstore and little free library finds! 📚🙂 #reading #books #booksky
31.10.2025 17:08 — 👍 4 🔁 0 💬 0 📌 0
Sure, Halloween is an astronomy holiday. But astronomers always enjoy scanning the heavens for spook-tacular galaxies, stars, and nebulae. This favorite is item number 43 from the Beverly Lynds' 1962 Catalogue of Dark Nebulae, fondly known as the Cosmic Bat nebula. While its visage looks alarmingly like a scary flying mammal, Lynds Dark Nebula 43 is over 12 light-years across. Glowing with eerie light, stars are forming within the dusty interstellar molecular cloud that is dense enough to appear in silhouette against a luminous background of Milky Way stars. Watch out. This Cosmic Bat nebula is a mere 400 light-years distant toward the serpent-bearing constellation Ophiucus.
🔭 Lynds Dark Nebula 43
Image Credit & Copyright: Team Ciel Austral
star.ucl.ac.uk/~apod/apod/a...
I have a very bad feeling about this...
27.10.2025 16:51 — 👍 54634 🔁 10265 💬 1882 📌 656
Infographic about GW241011 and GW241110 GW241011's source contained black holes about 13 and 8 times the mass of our Sun. The spin of the bigger black hole is high and bear aligned with the orbit. GW241110's source contained black holes about 17 and 8 times the mass of our Sun. The spin of the larger black hole is high and near anti-aligned with the orbit. Credit: Shanika Galaudage/Northwestern University/Adler Planetarium
We are pleased to announce our discovery of #GW241011 and #GW241110
Both come from binary black holes where one black hole is much larger than the other. The larger black holes have large spin. Could these black holes have formed in a previous merger?
ligo.org/science-summ...
#O4IsHere 🔭🧪⚛️☄️
Two #blackhole mergers, GW241011 & GW241110, detected a month apart in 2024 are helping scientists learn how black holes form, spin & evolve. Researchers from OzGrav & ANU, incl. PhD student Aswathi P Subhash & CI Dr Ling (Lilli) Sun contributed key analysis.
www.ozgrav.org/news/twin-bl...
Fantastic Album Release Show for The Skyler Mendell Sextet! 🎉🎶🎉
27.10.2025 05:37 — 👍 2 🔁 0 💬 0 📌 0
Dinner after more jazz!
25.10.2025 05:17 — 👍 1 🔁 0 💬 0 📌 0
Autumn leaves and jazz in Colorado!
24.10.2025 04:50 — 👍 0 🔁 0 💬 0 📌 0
Some of my recent posts! #reading #writing #science #scifi & more!
21.10.2025 19:09 — 👍 0 🔁 0 💬 0 📌 0
Monday morning book montage! 📚✨ #reading #books #booksky
20.10.2025 18:09 — 👍 6 🔁 0 💬 1 📌 0
Homemade sign with a graphic of Star trek’s Worf saying “A TYRANT HAS NO HONOR”
Ready for #NoKings tomorrow!
18.10.2025 04:14 — 👍 955 🔁 162 💬 14 📌 2
First Contact Friday! 📚🙂 #reading #books #booksky
17.10.2025 17:29 — 👍 2 🔁 0 💬 0 📌 0
Writing update: I’ve finished a round of line editing, with some clunkiness reduced, some descriptions improved & some typos fixed while introducing new ones! 🙃🙂😵💫 It’s off to beta readers soon. I hope they like kidnapping, quantum teleportation, & time travel! #writing #wip #scifi #books #writersky
15.10.2025 18:29 — 👍 8 🔁 0 💬 4 📌 0
A barred spiral galaxy with a bright yellow core, sweeping outer arms against a dark background. A smaller galaxy is visible on the top right.
50 million light-years away, galaxy NGC 1097 & its tiny companion NGC 1097A are locked in a galactic embrace.
The bright knots around NGC 1097’s centre are thought to be large bubbles of glowing hydrogen gas about 750–2500 light-years across.
www.eso.org/public/image... 🔭
#Flashback
A round red fuzzy nebula with radial petal-like structures and a distinct center in a dense starfield.
Andy Dungan in Cotopaxi, Colorado, captured the #LittleRosetteNebula. Andy wrote: "I took pics of the dot in the Question Mark Nebula, the Little Rosette Nebula. It looks like its larger cousin the Rosette Nebula." Thank you, Andy! See it at buff.ly/8PkX1XB
More great pics: buff.ly/moQkn9b
Quantum physics! 📚😎 #reading #science #books #booksky
10.10.2025 17:56 — 👍 3 🔁 1 💬 0 📌 0
John Clarke, Michel H. Devoret and John M. Martinis have won the Nobel Prize in physics for showing that quantum mechanics describes the behavior of objects much larger than atoms.
www.nobelprize.org/prizes/physi...
