Ask an Astrophysicist: Black Holes

Library of Past Questions Black Holes. First time visitors: Please be sure to read our main page! ... Light and Matter from Black Holes including Hawking Radiation. ... http://imagine.gsfc.nasa.gov/docs/ask_astro/black_holes.html - 23k - 2008-12-18

Imagine the Universe News - 11 August 2009

For More Information... Read more about black holes. News Archive. First Black Holes Kept to a Strict Diet, Study Shows. 11 August 2009. ... http://imagine.gsfc.nasa.gov/docs/features/news/11aug09.html - 20k - 2009-08-11

Black Holes - Introduction

Animation of a Black Hole. Black Holes. Introduction to Black Holes. ... On the other hand, galaxy-mass black holes are found in Active Galactic Nuclei (AGN). ... http://imagine.gsfc.nasa.gov/docs/science/know_l1/black_holes.html - 19k - 2009-01-12

Imagine the Universe! Dictionary AD

Many astronomers believe supermassive black holes may lie at the center of these galaxies and power their explosive energy output. ... http://imagine.gsfc.nasa.gov/docs/dict_ad.html - 44k - 2000-02

Black Holes

Black Holes. NOTE: This section is about what are called "stellar-mass black holes". For ... mysterious. Black Holes: What Are They? ... http://imagine.gsfc.nasa.gov/docs/science/know_l2/black_holes.html - 27k - 2009-11-16

Imagine the Universe: Black Holes

Imagine Home | Teachers' Corner | Current page. Black Holes. Information and Activity Books. ... Black Holes (K-8) (HTML), The Anatomy of Black Holes (9-12) (HTML). ... http://imagine.gsfc.nasa.gov/docs/teachers/blackholes/blackholes.html - 15k - 2007-01-23

How Do Massive Black Holes Grow? - Introduction

How Do Massive Black Holes Grow? Black holes up to about 50 times the mass of our Sun can be formed by normal processes in very massive stars. ... http://imagine.gsfc.nasa.gov/docs/science/mysteries_l1/massive.html - 16k - 2009-10-29

Suzaku: Strong Gravity around Black Holes

Strong Gravity around Black Holes. ... The motion of this gas is subject to the strong gravity around the black hole. Suzaku will be able to see these effects. ... http://imagine.gsfc.nasa.gov/docs/features/exhibit/astroe2_blackholes.html - 19k - 2008-06-18

Journey of Discovery - About Black Holes

Black Holes. A black hole is a region of space from which neither radiation (light) nor matter can escape. ... A black hole is an endpoint of stellar evolution. ... http://heasarc.gsfc.nasa.gov/docs/xte/learning_center/ASM/journey/black_hole.html - 4k - 2001-07-16

Imagine the Universe! Dictionary

Many astronomers believe supermassive black holes may lie at the center of these galaxies and power their explosive energy output. ... http://imagine.gsfc.nasa.gov/docs/dictionary.html - 135k - 2000-02

Black Holes

LISA Exhibit. The Big Bang. Black Holes. Relativity. Black Holes. Scientists already know that most galaxies have massive black holes at their centers. ... http://imagine.gsfc.nasa.gov/docs/features/exhibit/lisa_blackholes.html - 14k - 2006-02-21

Imagine the Universe News - 10 April 2003

For More Information... Learn more about black holes. How do massive black holes grow? ... But what about intermediate mass black holes? ... http://imagine.gsfc.nasa.gov/docs/features/news/10apr03.html - 19k - 2004-09-27

Black Holes

This site is intended for students age 14 and up, and for anyone interested in learning about our universe. http://imagine.gsfc.nasa.gov/docs/teachers/blackholes/starchild/cover.html - 13k - 2002-11-21

Gamma-rays from Black Holes and Neutron Stars - Introduction

Unidentified Gamma-Ray Sources. Gamma Rays from Black Holes & Neutron Stars. Pulsars. ... Show me related lesson plans. Gamma-rays from Black Holes and Neutron Stars ... http://imagine.gsfc.nasa.gov/docs/science/know_l1/compact_binary.html - 19k - 2004-09-27

Black Hole News Flash

News Archive. The Yell of a Black Hole. 04 December 1997. How fast are black holes at the centers of distant galaxies swallowing the matter around them? ... http://imagine.gsfc.nasa.gov/docs/features/news/04dec97.html - 19k - 2004-09-27

NASA's Cosmicopia -- Ask Us - Space Physics - Black Holes

Ask Us. Space Physics: Black Holes. ... Dr. Eric Christian. Black Holes and the Speed of Light. From what I understand, if something could ... http://helios.gsfc.nasa.gov/qa_sp_bh.html - 18k

Imagine the Universe! Theatre: Spinning Black Hole

Taking Black Holes for a Spin. Early in ... black hole. No one doubts that black holes rotate, but evidence for them has been elusive. ... http://imagine.gsfc.nasa.gov/docs/features/movies/spinning_blackhole.html - 16k - 2006-01-27

Black Holes

Black Holes. Standards Button. Level 1 topics include: Introduction to Black Holes; Journey into a Black Hole! Level 2 topics include: ... http://imagine.gsfc.nasa.gov/docs/introduction/black_holes.html - 12k - 2001-12-04

The Anatomy of Black Holes

This site is intended for students age 14 and up, and for anyone interested in learning about our universe. http://imagine.gsfc.nasa.gov/docs/teachers/blackholes/imagine/cover.html - 13k - 2002-11-21

StarChild: Black Holes

Black Holes. ... Black holes are extremely compact space objects that were once massive stars which collapsed inward due to the force of their own gravity. ... http://starchild.gsfc.nasa.gov/docs/StarChild/universe_level2/black_holes.html - 9k

Imagine the Universe News - 30 April 2001

For More Information... Learn more about black holes. Read questions and answers about black holes. ... Black Holes May Take Space For A Spin. 30 April 2001. ... http://imagine.gsfc.nasa.gov/docs/features/news/30apr01.html - 21k - 2006-01-27

StarChild: Black Holes

Read It Listen, Black Holes. Most scientists believe ... Black holes were once massive stars that used up all their fuel. As they died ... http://starchild.gsfc.nasa.gov/docs/StarChild/universe_level1/black_holes.html - 7k

Imagine the Universe News - 20 January 2005

Learn more about black holes. Learn more about black holes in other galaxies. Learn more about XMM-Newton. ... A Race Around a Black Hole. 20 January 2005. ... http://imagine.gsfc.nasa.gov/docs/features/news/20jan05.html - 21k - 2006-01-28

Imagine the Universe News - 14 May 2004

a mysterious substance that contributes to about 80 percent of the mass of the Universe, might be at least partially in the form of minuscule black holes. ... http://imagine.gsfc.nasa.gov/docs/features/news/14may04.html - 21k - 2005-02-08

Black Hole Bipolar Jets

Think of draining your bathtub: Accretion disks are the celestial equivalent of this phenomenon, and can be found around black holes, neutron stars, white ... http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/990923a.html - 17k - 2005-12