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What is The bending of light due to the great mass of distant galaxies?
The bending of light due to great masses is called Gravitational MicroLensing.
What are distant galaxies with black holes in their centers called?
There have been some suggestions that the objects called quasars might be extremely active galaxies with unusually supermassive black holes at their centers at such great distance from us that it is not possible for telescopes to resolve their galactic structure, making them just look like very bright stars (quasi-stellar objects). However this has not been verified.If these suggestions are correct, these extremely active galaxies must be so distant that the light we are seeing from them must have been emitted only a short time after the big bang began, in the initial cycle of star formation, which would make them the earliest galaxies formed and likely very young galaxies. However if they are this young these extremely active galaxies might have galactic structures so different from the galaxies we are familiar with that even if our telescopes could resolve them, we might not recognize them as galaxies.
A decrease frequency of light from a galaxy would make the galaxy appear redder?
Yes, this is due to the redshift effect in cosmology where the wavelength of light from distant galaxies is stretched as the universe expands, causing the light to appear redder. This redshift is proportional to the distance of the galaxy, helping astronomers estimate how far away it is.
What is good about a hubble?
The Hubble Space Telescope provides high-resolution images of celestial objects, allowing astronomers to study the universe in great detail. It has helped to make numerous groundbreaking discoveries, such as determining the age of the universe and capturing images of distant galaxies. Additionally, the Hubble has contributed to our understanding of dark matter, dark energy, and the evolution of stars and galaxies.
Why can't I use Cepheid variables to measure distances to very distant galaxies?
For close-by stars, parallax can be used to gauge distances. But for the most remote stars observable, the distance is too great to use parallax. Those distances are determined using a variety of methods, depending on the type of star, the approximate distance scale, and other circumstances. Such methods would require a much greater theoretical understanding of the stars themselves as well as the structure of the cosmos at large scales.
What is the largest known structure in the universe and is composed of galaxies and clusters of galaxies?
A so-called "great wall", which is a block of galaxies more than a billion light-years long.
Which galaxies have a great many short spiral segments branching from the spiral arms?
This may refer to the so-called "flocculent galaxies". Perhaps it's the "multiple arm galaxies", which are sometimes put in with the flocculent type.
Why do astronomers theorize that most of the matter in galaxies and clusters of galaxies is dark matter?
most of the mass in a cluster of galaxies is invisible, which provides astronomers with the strongest evidence that the universe contains a great amount of DARK MATTER
Why do astronomers theorize that most of matter in galaxies and clusters of galaxies is dark matter?
most of the mass in a cluster of galaxies is invisible, which provides astronomers with the strongest evidence that the universe contains a great amount of DARK MATTER
Where are two distant places the Great Pyramid can be seen from?
moon
Do all the galaxies form a bigger galaxy?
Over time - billions of years - galaxies will merge with other galaxies. In about 3 billion years, the Andromeda galaxy will merge with our own galaxy, the Milky Way.However, the separation between galaxies is so great, that not all galaxies will merge unless the fundamental issue of the amount of mass in the Universe is determined.If we live in a "contracting universe" then eventually all galaxies will merge.
What are the release dates for Distant Roads - 1990 America's Great Parks 17-19?
Distant Roads - 1990 America's Great Parks 17-19 was released on: USA: 9 April 2007
