• Section Summary
• Black Hole Memory
• In Your Opinion

• Miniature black holes form from the cramming of 10³⁶ protons into the area normally occupied by one.
• Minature black holes may have formed in the chaotic situations of the early Universe.
• When a star runs out of fuel for fusion, gravity causes the star to collapse. Stellar black holes form from the collapse of star with masses over 3 suns.
• The formation of middleweight black holes is currently unknown, but many believe that they formed from the combination of smaller black holes.
• The formation of supermassive black holes is also unknown, however there are many theories.

Then try to concentrate with Memory (Java Applet).

In Your Opinion
Feel free to share your opinion about anything related to  black holes. Here are some ideas:

• Do you believe miniature black holes exist? Why or why not?
• Middleweight black holes might have formed from the combining of two black holes, but what else could create objects inbetween stellar and supermassive black holes?
• Which theory about the formation of supermassive black do you think is correct? Or do you have one of your own?