Astronomy Picture of the Day
Index - Quasars
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Quasar: QSOs are objects that, at first glance, appear as normal
stars. Upon closer inspection, however, QSOs have with very large
redshifts (i.e. the light they emit is
strongly displaced toward the red end of the spectrum). Although their
exact nature is controversial,
they are commonly considered to be extremely distant, unusually bright
nuclei of galaxies. If so, then
the light we see from them would have been emitted when the universe was
a fraction of its present
age.
A Galaxy
Gravitational
Lens
Gamma-Ray Quasars
A Quasar-Galaxy Collision?
Microlensing of the Einstein Cross
A Milestone Quasar
NGC 3393: A Super Spiral?
Why Is QSO 1229+204 So Bright?
Authors & editors:
Robert
Nemiroff
(MTU) &
Jerry
Bonnell (USRA)
NASA Technical Rep.:
Jay Norris.
Specific rights apply.
A service of:
LHEA
at
NASA/
GSFC
&:
Michigan Tech. U.
Design of this page: Momoko