Quasars or quasi-stellar radio sources are the most energetic and distant
members of a class of ... Most quasars were formed approximately 12 billion
years ago, and they are normally .... nearby lar...
May 2, 2011 ... Why should galaxy collisions have been more common in the past than they are
today? Galaxies were closer together in the past because the ...
Apr 24, 2016 ... Observations at different distances show galaxies of different ages ... Get started
today for free ... observations of distant objects reveal them as they were in the
past ... cloud more likely to produce an elliptical galaxy than a spiral galaxy? ...
Why should galaxy collisions have been more common in the past ....
May 1, 2013 ... Models for galaxy formation have been of two basic types: ... The "top-down"
model on the origin of the galaxies says that they formed from huge gas clouds
larger than the resulting galaxy. ... There should still be galaxies forming today. ....
much closer together, so collisions should have been more common ...
Question 26 0.5 out of 0.5 points Why should galaxy collisions have been more
common in the past than they are today? Selected Answer: Galaxies were closer
Aug 15, 2013 ... Astronomers have identified more spiral galaxies than ellipticals, but that is ... If
fewer elliptical galaxies have been spotted, why do astronomers think they ... The
universe is a violent place, and collisions between galaxies are ...
Today we will take a closer look at ideas for why there are different types of
galaxies. ... If you have been watching the news coverage of the revolutions in
the Middle ... Giant ellipticals are about 10X more massive than the largest spiral
galaxies. .... Galaxy collisions are quite common, here are two spirals (
knicknamed the ....
C) We can observe the evolution of a single galaxy over time. D) We can observe
... do I see? A) the light from the galaxy as it is today, but it is blueshifted ... E)
Galaxy collisions shouldn't have been more common in the past than they are
Dec 6, 1994 ... Therefore, these galaxies, which we observe as they were less than two billion ...
so many more spiral galaxies in rich clusters long ago than there are today.
Apparently, many spiral galaxies have since been destroyed or disappeared. ....
galaxy collisions can actually trigger the formation of massive stars.
May 31, 2012 ... The Milky Way is destined to get a major makeover during an encounter ... NASA
astronomers announced Thursday they can now predict with certainty the ... be
tossed much farther from the galactic core than it is today. ... between galaxies
were more common in the past when the universe was smaller.