A galaxy is a massive cluster of stars (millions or billions) held together by gravity. The Milky Way is the name of the galaxy in which we live. Our galaxy was referred to as the universe before it was discovered that there were other galaxies.Complete step-by-step an...
Some of our detected haloes are in clusters with strong cooling cores, which are thought to be dynamically relaxed. We infer that the plasma in every cluster contains relativistic particles and magnetic fields, whether or not the cluster has recently undergone a major merger. We do not know, ...
When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. This mosaic from NASA WISE Telescope is of the Soul Nebula. It is an open cluster of stars surrounded by a cloud of dust and gas located about 6,500 light-years from Earth in the...
The galaxy cluster Abell 1689 is famous for the way it bends light in a phenomenon called gravitational lensing. A new study of the cluster is revealing secrets about how dark energy shapes the universe.
The word galaxy comes from the French word Galaxie, which additionally comes from the Latin galaxias meaning "Milky Way". In ancient times, there was only thought to be one Galaxy, which, as we know, is incorrect. Our star, 'The Sun' is one of many billions of other stars that make ...
While the distribution of matter in a galaxy cluster generally does have a center, it is never circularly symmetric and can be significantly lumpy. Background galaxies are lensed by the cluster and their images often appear as short, thin “lensed arcs” around the outskirts of the cluster. ...
When we stare up into the heavens on a clear night, away from light pollution and other distractions, we can see a milky bar of light that spans across the sky. This is how our home galaxy, the Milky Way, got its name, and it's how it looks from the inside. ...
This question shows research effort; it is useful and clear 11 Save this question. Show activity on this post. An alternative version of this question would be: "if was to pick a star from the 10111011 or so in our galaxy at random, what are the probabilities ...
Go to the center of our galaxy! If there's one place in space where we expect there to be a bigger concentration of mass close by than any other, it's the center of our spiral galaxy. After all, looking at other spiral galaxies, it's pretty obvious that's where the greatest, large...
What is a redshift galaxy? The Light Spectrum Explained: The light spectrum consists of a gradient of wavelengths of lights that has different energies and frequencies. The bluer the light is, the more energy it has and the shorter its wavelength. The redder the light is, the less energy ...