Aleksander Drygas
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aldryg.bsky.social
Aleksander Drygas
@aldryg.bsky.social
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aldryg.bsky.social
How cool is that 🤩
coreyspowell.bsky.social Corey S. Powell @coreyspowell.bsky.social · Feb 11
People have been observing galaxy NGC 6505 for 140 years, but only now noticed an "Einstein ring" at its center. There, gravity has bent and magnified another, more distant galaxy into a delicate ring of light.

The universe is full of beautiful, hidden surprises. 🧪🔭

www.esa.int/Science_Expl...
The ring of light surrounding the centre of the galaxy NGC 6505, captured by ESA’s Euclid telescope, is a stunning example of an Einstein ring. NGC 6505 is acting as a gravitational lens, bending light from a galaxy far behind it. The almost perfect alignment of NGC 6505 and the background galaxy has bent and magnified the light from the background galaxy into a spectacular ring. This rare phenomenon was first theorised to exist by Einstein in his general theory of relativity. This wide field shows the extended stellar halo of NGC 6505 and showcases the Einstein ring, surrounded by colourful foreground stars and background galaxies. A close-up view of the centre of the NGC 6505 galaxy, with the bright Einstein ring around its nucleus, captured by ESA’s Euclid space telescope. The Einstein ring is formed by gravitational lensing, with the mass of galaxy NGC 6505 bending and magnifying the light from a more distant galaxy into a ring. NGC 6505 is a well-known galaxy only around 590 million light-years from Earth, and Euclid’s discovery of a spectacular Einstein ring here was unexpected.
February 11, 2025 at 6:00 AM
aldryg.bsky.social
Well, so we have burning of books now... 🤬
deborahb.bsky.social Deborah Blum @deborahb.bsky.social · Jan 31
From a journalist friend: Just spreading the word. The CDC is purging data, so people should archive their favorite CDC datasets today, namely ones around race/ethnic diversity, LGBTQ, and reproductive health. Also health data involving climate. The youth risk behavior survey has already gone down.
January 31, 2025 at 5:01 PM
aldryg.bsky.social
A bit of science. Read this thread.
christopher664023.bsky.social ChristopherE @christopher664023.bsky.social · Nov 8
In 1890, the X and Y chromosomes were discovered. It was found that the men who were tested had 46 chromosomes, including an X and a Y, while women who were tested also had 46 chromosomes, including 2 X chromosomes.
So obviously the conclusion was that the Y chromosome defined masculinity.
January 25, 2025 at 6:00 AM