When Fuel Runs OutFusion is the only thing holding a star up. The moment the core stops producing it, gravity wins — and what survives is decided by mass alone.
A lighter core becomes a neutron star. A heavier one disappears behind an event horizon.
A neutron star packs more than the Sun's mass into a sphere the width of a city. Its crust is a lattice stiffer than steel, and beneath it neutrons are pressed until they touch.
Spinning that fast, it sweeps two beams of radiation past us like a lighthouse — which is how we found them at all.
Type in what you want to learn and Solus builds a complete course outline, units, and lessons for it in minutes — no materials required to get started.
How Neural Networks Learn
Every unit is broken into bite-sized lessons written by AI, structured to build on what you already know as you move through the roadmap.
Unit 1 · Foundations
Each lesson ends with multiple choice, true/false, and fill-in-the-blank questions with instant feedback, so concepts stick before you move on.
Question 2 of 3
What does backpropagation actually do?
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