黑洞与宇宙科普

Help me make a science explainer video. Topic: {Topic} (Supplementary materials: {Paper/Link/Screenshot, Optional}; Target audience: {Zero-basis public / Some basis, Optional})

- Content: Explain one core question clearly, with a curiosity hook, counter-intuitive points, and life-like analogies, but facts must be accurate and sourced.
  - Prioritize citing original papers, authoritative institutions, and textbooks; do not use secondary marketing accounts.