#chess writer, editor and publisher. Away from the (key)board, I enjoy astrophotography, hiking and expedition travel to remote regions. MA Math (Cantab) #cats
Chess players and chess parents in Twin Cities (Minnesota) area! Half-Price Books in Maplewood now has a lot of chess books; I've been doing some house clearing. All in as-new condition. Some out-of-print, and plenty of Kids books; wide range from Gambit's backlist. #chess#books
5 Shaheds and 4 Gerberas destroyed by pilots of the BULAVA unmanned systems unit of the Separate Presidential Brigade 🚀
All 9 interceptions were carried out using interceptor STING equipped with the Hornet Vision digital video transmission system.
One of the system’s key features is the use of a one-way video transmission channel. Simply put: it increases resistance to electronic warfare.
Astronomers may be getting closer than ever to directly detecting the universe’s very first stars, not by seeing them individually, but by identifying their fingerprints in extremely distant galaxies observed with the JWST.
These first-generation stars, known as Population III stars, are thought to have formed a few hundred million years after the Big Bang from pristine hydrogen and helium, before any heavier elements existed. Because of that, they would have been very different from stars today, likely more massive, hotter, and short-lived, and responsible for producing the first heavy elements that later seeded galaxies, planets, and ultimately life.
The new observations focus on unusual spectral signatures, particularly emissions linked to highly energetic processes, that don’t fit well with normal stellar populations. One key clue is the presence of ionized helium, which requires extremely intense radiation to produce, suggesting the influence of stars far hotter and more massive than those typically seen in later cosmic epochs.
Instead of resolving these stars directly, astronomers are effectively inferring their existence through the way they shape the light of their host galaxies, offering a kind of indirect but powerful evidence that these primordial objects may finally be within observational reach.
What makes this significant is that, until now, the first stars have remained entirely theoretical. They are expected to have lived fast and died young, leaving behind only subtle chemical and radiative traces. If confirmed, these detections would open a direct observational window into the so-called cosmic dawn, the transition from a dark, simple universe filled mostly with neutral hydrogen to one lit up by the first sources of light.
This phase also triggered processes like reionization, fundamentally altering the state of the intergalactic medium and shaping the formation of the first galaxies.
However, the interpretation is still cautious. Alternative explanations, such as unusual stellar populations or accreting black holes, could mimic some of the observed signals, so further data will be needed to confirm whether these are truly the long-sought Population III stars. Even so, the fact that we are now able to probe this epoch at all marks a substantial shift: for the first time, the earliest chapter of star formation is moving from theoretical modeling into observational astrophysics, narrowing the gap between predictions and direct evidence.
👉 https://t.co/cflGcy3psU
It’s hard to believe we’ve reached this point - 1,500 days since the full-scale invasion began.
Ukraine is still standing. Still fighting.
And russia still hasn’t won - and won’t.
Four little kittens showed up out of nowhere in our yard – and now we’re both excited and determined to find them kind, loving families. These cuties have completely stolen my heart! ❤️
I thank fuck every single day I don’t live in the USA. To the sane Americans: you know exactly why. To the MAGA dumbfucks about to flood my feed: save it. I’d rather live among refugees fresh off the boat than you inbred, flag-humping, pedophile-supporting motherfuckers 🇨🇦
There’s footage showing Russians erasing the right bank of the Kherson region from temporarily occupied Nova Kakhovka.
There are no military targets. Russians are shelling people’s homes for the sake of destruction and death. It’s genocide!