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A Probe Took Incredible Pictures of Mars on Its Way to a Far-Off Asteroid

NASA took advantage of the recent close approach of the Psyche probe to Mars to calibrate its observation instruments.

Show HN: Geomatic – a command-driven geometry studio enabled with autodiff

All commands have the format `output = \func inputs` or just `\function inputs`. Points and scalars are built on the fly. Eg `\line a b` to an empty canvas creates points `a` and `b`, and joins them with a line.

One can use broadcasting semantics similar to NumPy and PyTorch in a visual setting (imagine creating a list of circles where one dim corresponds to radius and another to the center). One can also use backpropagation, run gradient descent or visualize vector fields. Almost everything is reactive so changing a variable updates all of the downstream geometry. It also allows anyone to write and load their own visualization, which can be broadcasted and differentiated through.

Comments URL: https://news.ycombinator.com/item?id=48264635

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