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The main light source from a black hole is a structure called an accretion disk. Black holes grow by consuming matter, a process scientists call accretion, and by merging with other black holes. A stellar-mass black hole paired with a star may pull gas from it, and a supermassive black hole does the same from stars that stray too close.
Anatomy of a black hole. Event Horizon. Accretion Disk. Event Horizon Shadow. Photon Sphere. Doppler Beaming. Corona. Particle Jets. Singularity. NASA's home for exploring everything beyond our solar system.
A black hole is so dense that gravity just beneath its surface, the event horizon, is strong enough that nothing – not even light – can escape. The event horizon isn’t a surface like Earth’s or even the Sun’s. It’s a boundary that contains all the matter that makes up the black hole.
8 Σεπ 2020 · A black hole is an astronomical object with a gravitational pull so strong that nothing, not even light, can escape it. A black hole’s “surface,” called its event horizon, defines the boundary where the velocity needed to escape exceeds the speed of light, which is the speed limit of the cosmos.
Basic Black Hole Anatomy Black holes are physical objects in space, just like stars and planets. They have so much mass packed into such a small sphere that nothing, not even light, can escape their gravity. Features all have in common Event horizon: the black hole’s “surface” — the point of no return Spin: how fast depends on the ...
7 Μαΐ 2015 · Table of Contents. i. Association with National Mathematics and Science Standards. ii. Preface. 1. Welcome to an Amazing Universe. 2. Introduction to Black Holes.
7 Μαΐ 2015 · Educators' Corner. The Anatomy of Black Holes. An Information & Activity Booklet. Grades 9-12. 1998-1999. Updated 2001. Probing the Structure & Evolution of the Cosmos. http://imagine.gsfc.nasa.gov/ EG-2001-4-010-GSFC. Download a pdf version.
