What did Harlow Shapley argue?
What did Harlow Shapley argue?
The Great Debate Curtis argued that the universe is made up of many galaxies similar to ours (these had been identified by astronomers of the time as “spiral nebulae.”) Shapley argued that spiral nebulae were clouds of gas and that they and globular clusters occur within the Milky Way galaxy.
How was the Shapley Curtis debate finally resolved?
The question was settled in 1923 when Edwin Hubble, using the 100 ” at Mount Wilson, discovered Cepheid Variable stars in the andromeda spiral nebula and used the perio-luminosity relation of Henrietta Leavitt to find the distance of these objects.
What did Heber Curtis argue in the Great Debate?
In the debate, Shapley and Curtis truly argued over the “Scale of the Universe,” as the debate’s title suggests. Curtis argued that the Universe is composed of many galaxies like our own, which had been identified by astronomers of his time as “spiral nebulae”.
What is the error in Hubble’s observation?
The errors quoted are one sigma, with the first being the statistical error, and the second, larger error being the systematic uncertainty due to factors like the chemical composition of the Cepheids in different galaxies, the distance to the Large Magellanic Cloud to which the distance comparison is made, and the …
Was Shapley and Curtis correct?
On this point, Curtis turned out to be correct, as subsequent data bore out. But Shapley was correct in arguing that our galaxy was larger than previously thought, and for showing that our Sun was not at the center of its galaxy.
Why do galactic disks appear blue?
Harlow Shapley found the Milky Way was: much larger than previously thought. Galactic disks appear blue because: They believed that the Milky Way was the entire universe.
Who was correct Shapley and Curtis?
Curtis thought that the spiral nebulae were galaxies external to our own, while Shapley disagreed, holding instead that they were clusters made up mostly of gas. On this point, Curtis turned out to be correct, as subsequent data bore out.
Was Shapley or Curtis correct?
Thus, Shapley proved to be correct about the size of our galaxy and the sun’s location in it, while Curtis correctly predicted that the universe is composed of many galaxies, among them the spiral nebulae which are very similar to our own galaxy – a point Shapley readily conceded when the new evidence came to light.
Who was more correct about the Milky Way’s place in the universe Shapley and Curtis?
Curtis argued that our Galaxy was small, the sun was near the center, and spiral nebulae were other galaxies similar to our own. Both Curtis and Shapley were incorrect on the first point (Curtis guessed too small, Shapley too large), and Curtis was also incorrect on the second point.
Why couldn’t atomic nuclei exist when the universe was less than about 2 minutes old?
Why couldn’t atomic nuclei exist when the age of the universe was less than 2 minutes? It was too hot for atoms to form so everything was just an opaque sea of subatomic particles.
How did Hubble prove that Andromeda was outside of the Milky Way?
All Hubble had to do was look for cepheid stars in Andromeda and make the appropriate calculations. Night after night, he took photographs of Andromeda with the enormous telescope, searching for cepheids. The light from V1 made it clear: Andromeda was well outside the bounds of the Milky Way.
Who is Galaxy technologies?
Galaxy Technologies is a complete integrated services company from design engineering to manufacturing, sub-assembly, assembly and installation. We provide turnkey solutions for complex design and manufacturing opportunities.
What happened to the universe after the Big Bang?
After the Big Bang, the Universe was composed of radiation and subatomic particles. What happened next is up for debate-did small particles slowly team up and gradually form stars, star clusters, and eventually galaxies? Or did the Universe first organize as immense clumps of matter that later subdivided into galaxies?
Is our Milky Way galaxy unique in the universe?
Our Milky Way Galaxy is one among the billions of galaxies in our Universe. You are unique in the Universe! You can observe objects in our solar system and even see other galaxies at a star party near you-and rest assured that everything you are seeing is a part of the same universe as you!
What is Galaxy makers?
Welcome to Galaxy Makers! Galaxy Makers is an demonstration where you are in control of the Universe. You choose what it’s made of and hence how it works! You can also take part through this website; try clicking one of the buttons below!