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Indeed, even Albert Einstein adjusted his relativity equations to consider the concept that the universe was continuing to expand.

This helped aid Hubble in expanding upon the idea that the universe is still expanding, improving upon the Big Bang theory, essentially making it what others call Hubble’s own theory.

While studying the directions of the galaxies moving away and towards the Earth, Hubble discovered that the further away a galaxy is, the quicker it moves, while the closer they are, the slower they move. As he observed the galaxies as they passed Earth, Hubble noted that those with longer, reddish wavelengths are moving away from us, which is known as redshifting galaxies with shorter, bluish wavelengths are moving toward, which is called blueshifting (Christianson, 1996). While Hubble made it clear that these galaxies were moving away from Earth, he wanted to figure out in which directions they were actually moving. Not only did Hubble give us something to think about in regard to our own galaxy, but he gave us something to think about in regard to other galaxies.Īfter Hubble brought to light the thought that the universe was still expanding and that there were other galaxies besides our own, he continued to research and really study these other galaxies, paying close attention to the direction in which they were moving. Not only did it show that our galaxy is not the only galaxy in existence, opening up a whole new concept to be researched, but it also provided the foundation for the theory that the universe is still expanding, which is another theory that Hubble spent the majority of his time on researching and studying. Hubble concluded that “these star systems are each ‘island universes,’ not part of our own galaxy (Haley, 1996).” This was such an important discovery during the twentieth century. It must be understood that in these times, there was no concept of the possibility of other galaxies besides our own thus, the disputes over the nebulae.Īlthough Hubble had yet to fully engage himself into the astronomy field, he was the one to figure out that since the nebulae were moving away from Earth that they were other galaxies. The arguments were about whether or not these nebulae were part of our Milky Way galaxy or star formations beyond the galaxy. In the early twentieth century, back when it was widely believed that our Milky Way galaxy was the only galaxy in existence, there were many disputes about the astronomy field in regard to clusters of stars known as nebulae. Out of the many observations and discoveries that were made involving our universe, whether they were done by other astronomers or by Hubble himself, the most amazing one was the discovery of even more galaxies within our own solar system. Hubble remained in the astronomy field until his death on Septemfrom a blood clot in his brain. From then on, Hubble dedicated all of his time to the enhancement of astronomical knowledge, allowing us to better understand our galaxy, as well as others. in astronomy, having finally decided on what he wanted to do as a career. It was in 1917 when Hubble had received his Ph.D. He later changed his major to Spanish he used both his Spanish and science majors to teach at a high school in Indiana. However, while he attended college at the University of Chicago, he focused on mathematics and astronomy, eventually getting a bachelor of science. He got good grades while he was in school, though he focused more on his athletic skills, such as track and field and amateur boxing. Although he was a good student, Hubble was known more for his athletic abilities than his intelligence. Edwin Hubble: Understanding the GalaxiesĮdwin Hubble was born on Novemin Missouri, though a lot of his childhood was spent in Illinois.