Galaxy

discovered by the famous American astronomer Edwin Hubble at Mount Wilson Observatory on August 30, 1935. In his short paper, Hubble presented the observational evidence for one of science’s greatest discoveries the expanding universe. Hubble showed that galaxies are receding away from us with a velocity that is proportional to their distance

Astronomy II Professor Robin Bryne Northeast State Community College Milky Way Report Home to Earth Our Earth is part of the galaxy known as the Milky Way. Astronomers for centuries have pointed their telescopes toward the Milky Way trying to discover the mysteries the galaxy holds. The white light that one can see is known to be the origin of our solar system. Milky Way galaxy is a gravitational bound system consisting of stars, stellar remnants, an interstellar medium of gas and dust, and dark matter

(a group of several galaxies) using two different methods. He tried to infer this mass from the speed of the galaxies. Just like kids on a merry-go-round have to hold on to avoid being ejected, galaxies are held together in a spinning galactic cluster by the gravitational force provided by the matter it contains. If there were not enough matter to create this force, the galaxies would simply scatter. He then compared his result with the mass evaluated from the light the galaxies shed. He realised

how galaxies within the vast expanse of the Universe have undergone dramatic trasnforsatioms over the last eight billion years ro so.

“Nebulae” inside the Milky Way Galaxy or separate, distant Galaxies? Discoveries of what were termed “nebulae” began in the early 17th century. The first of these discoveries was the Orion Nebula, which looked like a normal star to the naked eye. French scholar Peiresc discovered it in 1610 using one of the first telescopes to be made. Later, in 1656, Christiaan Huygens observed the interior of the Orion Nebula and determined that it consisted of a compact quadruple star system instead of a singular

the Milky Way Galaxy was much larger than the “conventional” scale based on star counts, but then incorrectly concluded that similar-sized galaxies beyond our own could not exist. Curtis incorrectly accepted the smaller size for our Galaxy, but correctly argued that similar galaxies might exist beyond our own. Distribution of the Nebulae in the Sky – Curtis noted that the observed spiral nebulae were generally found away from the plane of the Galaxy, and he suggested that our Galaxy had a “ring” of

fuzzy “spiral nebulae” (which today we call galaxies): Were they close enough to be part of our own Milky Way, or were they sufficiently distant to be whole galaxies unto themselves? Shapley held that, given that his research had revised an increase in theinupward the size of the Milky Way, the spiral nebulae must be part of our own Galaxy. His opponent, Heber Curtis of California’s Lick Observatory, while incorrectly rejecting the great size of our Galaxy, correctly argued that the spirals were removed

had come to the conclusion that there are many more galaxies other than just our Milky Way. Unfortunately, Edwin Hubble died on Se 1953 in San Marino, California. Edwin Hubble made multiple discoveries that all support american astronomy, and remained open to new situations and persisted to innovate ways to overcome the mysteries of space exploration. Hubble completely illuminated the world by extending the observable universe by millions of galaxies, and by benefitting the field of astronomy in a multitude

distance. Also, that galaxies that are 3 times as far from us move 3 times as fast too! Going back to the expansion part, the universe is just not expanding in one direction, but in every direction there exists! This observation proves that it has taken the equivalent amount of time to move from a common starting position to its current position And since the universe has been continuously expanding there are more and more clusters of galaxies, this. The phenomenon of the galaxies, which are moving

astronomers have measured the distance to the most remote galaxy ever observed. It what is known as GN-Z11, this galaxy is one of the first galaxies to form. Its existence can be traced as early as 400 million years after the Big Bang. Knowing this brings astronomers one step closer to finding out how to the universe was created. In other words, they may have just found God. HOW NASA DISCOVERED THE GOD UNIVERSE Previously, finding the distance of galaxies involved looking at their color in images from NASA's