How do black holes grow without swallowing everything nearby?
Quick Answer
They mainly grow by accreting gas, dust, and stars that get close enough, often through disks that feed material gradually. Many black holes also gain mass through mergers with other black holes.
The Full Story
Black holes do not roam around eating everything in sight; they grow only when matter gets close enough to lose energy and fall in. Material often spirals through an accretion disk, heating up and shining brightly before crossing the event horizon. Supermassive black holes at galaxy centers can gain mass through prolonged gas accretion and through mergers during galaxy collisions. Observations from radio to X-ray astronomy show these systems are often surrounded by extreme, but still limited, feeding environments.
Key Facts
YouTube Angle
Suggested video title for this topic:
"How black holes feast without vacuuming the universe."
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