Hacker News new | past | comments | ask | show | jobs | submit login

Not all of the objects classed as galaxies feature a black hole at the center. Many of the objects classed as galaxies are mere bundles of stars compared to the "traditional" spiral galaxies. Where do galaxies end and globular clusters begin? It is arbitrary.

I'm in danger of veering into category theory/zen buddhism here, so I'll leave it at that.




Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: