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From Science 2.0:
 Last month, physicists predicted the formation of accretion disks and
relativistic jets that warp and bend more than previously thought,
shaped both by the extreme gravity of black holes and by powerful
magnetic forces generated by their spin.
Black holes, absences at the center of both galaxies and science
fiction, shape the growth and death of stars around them through both
their powerful gravitational pull and explosive ejections of energy - a
pull so strong close to a black hole that even light cannot escape from
within, hence the difficulty in observing them directly.
"Over its lifetime, a black hole can release more energy than all the
stars in a galaxy combined," said co-author Roger Blandford, director
of the Kavli Institute for Particle Astrophysics and Cosmology and a
member of the U.S. National Academy of Science. "Black holes have a
major impact on the formation of galaxies and the environmental growth
and evolution of those galaxies."
Read the whole article
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