Space Exploration: Neptune and Voyager II – Howard Koslow

Via 70s Sci-Fi Art


first detailed computer calculation of a black hole’s appearance



In 1978 at the Paris Observatory, Jean-Pierre Luminet became the first to make a detailed computer calculation of a black hole’s appearance. He did so, he told me, by programming a (by then already obsolete) 1960s IBM 7040 computer, using punch cards…Because Luminet had no way to print out the resulting image or visualize it on a screen, he used the data to draw an image by hand, putting individual dots of India ink onto a photographic negative.

via @(((Castelvecchi)))

re: Dmanisi

nearly two million years of history, the medieval city, whose walls still stand, built on top of a Bronze Age settlement that’s 5,000 years old, and still beneath that, the 1.8 million-year-old remains of one of modern human’s earliest ancestors.


Rendering of what the inhabitants of Dmanisi could have looked like 1.8 million years ago. Photo by Hari Sreenivasan

Also highlights the work of Paul Salopek and the Out of Eden Walk. Recently he reluctantly, said Goodbye to Georgia and left the heart of the Caucasus.

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“Hooray, no more string theory”

Chris Lee on Quantum gravity and space’s informational entropy

Space is the set of dimensions that allows motion to take place, but it also stores information via its configuration—no, I don’t know how that happens—but the maximum amount of information per unit space is finite. Essentially, there are only so many configurations available to space and, once you have used them all, no more information can be stored. So, we have space, even empty space, that has information sitting in it.

Read more (here)