* Scientists noticed that all stars & planets are moving away from Earth which supports the theory that a massive explosion once occurred. (Big Bang)…
Karl Schwarzchild was a German astrophysicist who used Einstein’s theory of relativity to compute and calculate the gravitation fields of stars. His solution to Einstein’s equation led him to calculate the radius of an object of particular mass for which light could not escape or in other words “that the fabric of time-space would fold in on itself, creating a ‘singularity’ – a region with zero volume and infinite density. [3]…
* Isaac newton created a theory explaining the order and design of the universe by using Kepler, Copernicus, and Galileo’s work.…
The great astronomer Edwin Hubble was able to see for the first time that the outer spiral arms of the Andromeda galaxy contained individual stars. Theses appeared similar to many found in the Milky Way, but were much fainter. Hubble located three novae. One of these novae, however, turned out to be a Cepheid variable, a star that changes predictably in brightness. This Cepheid, and others subsequently discovered in the Andromeda Nebula, enabled Hubble to prove that the Nebula was not a star cluster within our own Milky Way, but a galaxy more than a million light years away. Andromeda is especially important for astronomers because is so similar o the Milky Way. Since we can never see our own galaxy from the outside, we can observe and learn from our nearby sister instead- the next best…
What important discovery did Hubble make about distant galaxies that led us to the conclusion that the universe is expanding?…
Albert Einstein’s theory of relativity is considered by many to be based in metaphysics but was adopted into physics because of its significance.…
Cosmology is the study of the universe as a whole. Describe the foundation of modern cosmology.…
theory of gravity. This discovery also opened up a new field in the subject of astronomy.…
Using the Hooker 100-inch reflector on Mount Wilson, Hubble found that the Andromeda nebula, a cloudy patch in the sky, was so far away it could not be within our own galaxy. This illustrated that the Milky Way is just a small object within the universe. Later, by examining the light of distant galaxies, he showed that the universe is expanding, and that everything in it is moving away from everything else. In the early mid-1920s, Hubble began conducting new research with Milton Humason, on the galaxies' spectral shifts and unique distances. He and Humason published their research in 1929, theorizing that red shifts in galaxies' light emissions move at a linear rate to the distance between them. This means that galaxies are…
The Big Bang theory is the theory that there was ax explosion over 13.7 billion years ago that created space and time into existence. Before the big bang there was nothing. The universe is constantly expanding in a result of the force of the explosion.…
The Big Bang theory, conceived in the early 1920’s, states that approximately 13.7 billion years ago the universe began as an infinitely small, infinitely hot, infinitely dense singularity, which is an area of intense gravitational pressure thought to exist at the cores of black holes (Big Bang theory: An overview, 2002). Scientists believe that vacuum fluctuation created this singularity, but they are unsure where it came from and why it they appeared. Prior to this singularity, it is thought that nothing existed; not space, not time, not matter. Rather than being an intense explosion as many picture, the Big Bang theory suggests that the singularity rapidly inflated; expanded and cooled; going from very, very small and very, very hot to the size and temperature the universe is today (Big Bang theory: An overview, 2002).…
Stars moving away from us are red shifted (light of longer wavelength) while stars movingtowards us are blue shifted (shorter wavelength)…
During the 1970’s astronomers collected information surrounding the mass of Galaxies. They calculated this by observing the acceleration of clouds on the edge of the galaxy…
After eight years of work Einstein completes his work General Theory of Relativity in 1915. The work describes that energy and matter are directly related to space and time. He also tells of his curved four-dimensional space-time theory, with this Einstein explains the force of…
The most well-known and believed theory of the creation of the universe is The Big Bang Theory. The Big Bang Theory suggests that the universe originated about 10 to 20 billion years ago from a huge explosion of a small volume of matter at an extremely high density and temperature. Basically, the universe began at a certain time in the past and has been expanding ever since. Evidence for The Big Bang begins with Edwin Hubble’s observation of universal expansion. The galaxies outside of the Milky Way galaxy are moving away from us, and consequently the ones farthest away are moving the fastest. “However, the galaxies are not moving through space, they are moving in space, because space is also moving. In other words, the universe has no center; everything is moving away from everything else” (The Library Of Congress, 2010). The Doppler effect is evidence that the universe is expanding. “In 1912, Slipher found that the light from all galaxies are moving away from Earth, and the amount of red shifting revealed their speeds” (Merali, 2013). Before 1998, everyone thought that the universe was slowing because of…