A spiral galaxy is a certain kind of galaxy originally described by Edwin Hubble in
his 1936 ... found in low-density regions and are rare in the centers of galaxy
clusters. ... blue stars (due to t...
b) 30,000 light-years from the center in a globular cluster. ... High-speed motion
of gas and stars near the Milky Way Galaxy's center is explained by ..... Due to the
density and collisions among galaxies, ______ are rare in the centers of ...
Stars, gas, and interstellar dust orbit the center of the galaxy due to the
gravitational ... The Milky Way has more than a hundred billion stars, but the stars
are so far apart that they almost never collide. ... ago, because galaxies are likely
to have formed first in high-density regions like galaxy clusters. ... Irr II galaxies
Galaxies cluster; although a small fraction live in splendid isolation, the ... million
light-years); therefore, encounters between galaxies are relatively rare. ... (as
would be common in a rich cluster) because a low-speed collision would ...
Furthermore, the fact that the stellar density at the center of an elliptical galaxy is
Jan 7, 2016 ... This rare cluster, which is located 10 billion light years from Earth, weighs as ...
NASA's Marshall Space Flight Center in Huntsville, Alabama, manages the ... For
more Chandra images, multimedia and related materials, visit: ...... This change in
density is most likely caused by a collision between this cluster ...
Apr 28, 2016 ... “In this sense, galaxy clusters are like Russian dolls, with smaller ones having a
similar ... For more Chandra images, multimedia and related materials, visit: ....
greater density and show a strong concentration toward the galaxy's center. .... To
learn more about clusters, including how they grow via collisions, ...
some dwarf galaxies has large, constant-density cores, as opposed to the
predicted ... absence of collisions in the lensing cores of massive clusters implies
that any dark ... the dark matter particles should be rare to prevent the dark matter
from .... two images relative to the center would be zero for a spherical potential.
Sep 23, 2015 ... For example, the increased X-ray activity could be due to a change in the ...
NASA's Marshall Space Flight Center in Huntsville, Alabama, manages the ..... or
black hole-neutron star collisions eventually forming either a black hole or ......
Galaxy clusters like 3C295 also contain large amounts of dark matter, ...
Mar 26, 2015 ... An image of the galaxy cluster MACS J0416.1–2403 with dark ... dark matter,
collisions between clusters of galaxies provide a great testing ground. ... matter
density toward the centers of galaxies and galaxy clusters, and ... If the
interactions are rare but exchange a lot of momentum... dark ... Related Stories ....
Galaxies, The Galaxy, Galaxy clusters, Giant stars and helium fusion, Globular ...
the fusion of hydrogen into helium under conditions of enormous temperature
and density. ... The temperature at the center of the Sun is 15.6 million degrees
Kelvin (K .... and helium (about 10%), elements that are relatively rare on our