Excellent analysis of internet power, by Bruce Schneier.

Originally shared by Ronald L. Rivest

https://www.youtube.com/watch?v=h0d_QDgl3gI

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M102 2022-05-19
M102 is a difficult object for my setup and conditions. It is, apparently, known as the “Spindle Galaxy”. A five or six times blowup of the above image does manage to show the “spindle”, barely: This Hubble image gives a better idea of how it got the name.
Another M101 2022-05-14
I am slowly accumulating more time on M101. This image is over 8 hours total exposure, under generally poor conditions — not quite double the previous version. It’s a good thing the telescope mostly runs unattended. The blurred spot in the lower right corner is NGC 5474, a true physical companion of M101 that is […]
Heroes of another kind 2022-05-11
April Fools is a widespread tradition, so I am suspicious of this placard posted on the walls of Castle Wertheim.
Fountain in Seville 2022-05-08
Accidents happen. The stop in Seville was less than ideal: dock in Cadiz, catch an early morning bus, then a walking tour of a couple of high points of Seville. Back to the bus, back to the ship. I don’t remember taking this picture, but there are many other images of the area on my […]