Quasars or quasi-stellar radio sources are the most energetic and distant
members of a class of objects called active galactic nuclei (AGN). Quasars are
extremely luminous and were first identified ...
A plot of the orbital speeds of stars and nebulae in a galaxy versus distance from
... stars that he measured in the Andromeda Nebula appeared to be very faint ....
defined by the travel time of light over the lifetime of the universe, has not yet ..... a
planet of the same mass as Earth were orbiting the Sun at a distance of 10 AU.
Feb 9, 2015 ... ... beating the last record holder by a full 100 million years — yet, only now ...
False-color image of the field around the quasar ULAS J1120+0641 (the faint red
source ... The vast majority of these objects were ordinary sunlike stars in ... small
size of quasars also means they appear star-like when viewed ...
Apr 9, 2010 ... (PhysOrg.com) -- The phenomenon of time dilation is a strange yet ... is that
events occurring in distant parts of the universe should appear to occur ... ... at the
same rate no matter their distance from the Earth, without a hint of time dilation. ...
If these quasars were like the previously observed supernovae, an ...
Our own galaxy contains a few tens of billions of stars arranged in a disk; the
nearest of ... 3C 273 with a faint optical source that looked like an
undistinguished star. ... lines were redshifted—Doppler shifted by the
cosmological expansion of the ... such as supermassive stars, dense clusters of
ordinary stars or neutron stars, ...
Now appear before You with a new contrivance of glasses [occhiale], drawn from
the ... for example, nine miles appear as though they were only one mile distant.
... of the heavens very much like its center; in size and distance it has the ratio of
a ... it is by no means absurd to search there above for the themes of our lives, ...
Apr 27, 2003 ... H.01 How many stars, galaxies, clusters, QSO's etc. in the Universe? ... does this
mean they are that far away now or were that far away when the light left them? ...
for example, for every Sun-like star there are about 200 faint red M dwarfs. ...
enough to see nearby, much less at large cosmological distances.
Some of these milky nebulae have spiral shapes to them and others look like ...
The distances between galaxies are large and are often measured in
megaparsecs. ... Those favoring a large Milky Way with the spiral nebulae inside
it were ... little dust and gas left between the stars; (c) this means that they have
no new star ...
problem Even before NASA launched Hubble, engineers were hard at work
building ... —the Wide Field Planetary Camera 2 (WFPC2)—meant for installation
by ...... and quasars, the intensely bright, star-like objects appearing at galactic
distances .... he called the cosmological constant Astronomers don't yet know
Oct 22, 1998 ... study a wide range of questions in galaxy evolution and cosmology. ... for
unresolved faint quasars and AGN in the crude combine images ... each filter, we
were able to obtain well sampled radial profiles of the objects and measure their
... inconsistent with that of ordinary stars, 7 pointlike objects with colors ...