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# Astronomy assignment - Essay Example

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Kepler deduce on the elliptical optical of planets from Tyco’s data indicates the distinction between an oval and the old model of a loop and elliptical orbits, which gives a ring with the Sun unbalanced, was small to the point that it required high correctness to recognize…

## Extract of sample "Astronomy assignment"

Astronomy assignment Astronomy assignment Arrange the following in order of physical size from smallest to largest:
A human being
Saint Mary’s Campus
A large Comet’s nucleus
The moon
The sun
A large planet
A tiny meteoroid
The star Betelgeuse
A small Galaxy
The Milky Way Galaxy
The peninsula of Halifax
2. Why did Kepler deduce the elliptical orbits of planets from Tycho’s data where so many other earlier astronomers and learned men had missed it?
Kepler deduce on the elliptical optical of planets from Tyco’s data indicates the distinction between an oval and the old model of a loop and elliptical orbits, which gives a ring with the Sun unbalanced, was small to the point that it required high correctness to recognize the contrast. Planets circles have to a great degree little contrast between the significant and minor tomahawks of the ovals (Moltz, 2014).
3. Name two of the things Galileo found with his telescope that helped support the Copernican model?
In regards to Copernican model, Galileo found that earth was not the center of all things. He also found that Venus showed a complete cycle of phases, like those of our Moon, a finding that could be explained only by the planet’s motion around the Sun. These observations were more strong evidence that Earth is not the center of all things and that at least one planet orbited the Sun.
4. If the Earth was to shrink to one third of its current radius, what would change, your mass or your weight? How much would it change by?
The weight will change by 21 kg since the mass remain constant because the center of gravity is constant. The gravitational force between you and earth is divided into two components. One is the centripetal force required to keep you moving in a circle, and the rest is your weight. So if the radius increases so does the centripetal force. Thus, the weight goes down. The weight will change just proportional to the earth radius changes i.e. by one third of its current measure.
5. Is there any gravity in near Earth Orbit? (i.e.: where the space shuttle orbits) How about in deep space, thousands of light years from any object?
There is gravity near the earth orbit keeping in mind that Earths gravity affects everything at or near the planets surface. We feel the force of gravity on Earth through our mass, and that force also translates into a downward pull of 9.8 meters per second squared However, in deep space, thousands of light years from any object, there is no gravity since the higher you go, the weaker and no gravitational force exists (Chaplin, 2012).
References
Chaplin, J. (2012). Round About the Earth: Circumnavigation from Magellan to Orbit Hardcover – Bargain Price. Washington DC: Simon & Schuster.
Gibbons, G. (2008). The Planets [Paperback]. New York NY: Holiday House.
Moltz, J. (2014). Crowded Orbits: Conflict and Cooperation in Space [Hardcover]. Columbia: Columbia University Press. Read More
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