Her work may have inspired Rubin's thesis, which suggested groups of galaxies
exhibited extra motion, in addition to their predictable motion due to the expanding universe.
Some emissions occur when particles reaccelerate due to the collision of small groups of galaxies
with the cluster.
Examples are stellar clusters, external galaxies, and clusters and groups of galaxies
. In those cases, the problem is analogous.
But if they turn up outside of clusters, isolated or with small groups of galaxies
, then perhaps they're just born that way.
Stephan O'Meara spotted a tight string of stars in an east-west direction almost halfway between these two compact groups of galaxies
. He characterized this handful of stars as "fleas" surrounding the group of deer!
Andrews in Scotland, searched for groups of galaxies
similar to ours in the most detailed map of the local universe yet, the Galaxy and Mass Assembly (GAMA) survey.
Perhaps the most approachable of these was the Hickson Compact Groups of Galaxies
(HCG) catalogue, (9) compiled by Paul Hickson in 1982.
From the formation of stars and planets to the behaviour of the largest groups of galaxies
, Prof Ward-Thompson's work on Herschel has helped provide images of the universe in unprecedented detail.
From the formation of stars and planets, to the behaviour of the largest groups of galaxies
, Herschel is providing images of the universe in unprecedented detail.
They consist of closely bound groups of galaxies
, which are themselves made up of billions of stars.
Astronomers detect these groups of galaxies
by looking for their shadows in the cosmic microwave background radiation, which astronomers think is what's left over from the Big Bang.
With the aid of powerful telescopes, such as those of Mount Palomar in California, or the orbiting Hubble telescope, we can already observe large stellar bodies that are great distances away such as galaxies or groups of galaxies
. The Local Group is the name given to a group of 18 to 20 galaxies including the Milky Way, in which the Earth is situated.