One additional physical quantity we know now is the total baryonic angular momentum of each galactic cluster
While peering at the some of the most distant galactic clusters
that telescopes could then discern, researchers round a puzzling phenomenon.
The results match estimates of the amount of dark matter in galactic clusters
made by observing lensed images from the ground.
So some unseen mass must be at work, conventional wisdom declares, holding galactic clusters
together and governing the rotation rate of matter at the outer edges of individual galaxies.
USA: Astronomers have captured images of the oldest and most distant galactic clusters
ever seen - a discovery that shows immense numbers of stars formed less than two billion years after the birth of the cosmos.
Only in the past 10 years have other observations, in fact, revealed that the thin gas permeating massive galactic clusters
is heated to tens of millions of degrees.
The discussions include constellation names in both Latin and English; a short description of the history and significance of each constellation and how it got its name; and relevant details of the primary objects, such as stars, nebulae, galaxies, or galactic clusters
The new X-ray study of galactic clusters
provides an independent method of detecting that cosmic push, say Andy Fabian and Steve Allen of the University of Cambridge in England and their colleagues.
You will be able to pick out things you haven't seen before," he says, such as stars forming in central galaxies of galactic clusters
Cosmic strings have recently run into trouble in that arena because their expected pattern matches neither the distribution of galactic clusters
nor the patchiness of background radiation left over from the Big Bang (SN: 1/27/96, p.
He suggests that distant hydrogen clouds may be part of galactic clusters
and are probably associated with faint, run-of-the-mill galaxies.
After searching for nearly three decades, scientiests have uncovered evidence that may solve one of cosmology's oldest riddles: How did primordial matter evolve into the stars, galaxies and galactic clusters
we see today?