ESSAY ATRS
If we were to re-run the formation of the solar system, what would likely be the same and what would likely be different?
If we did re-run the solar system I believe it would look something like a slim orbital with a spherical orbit of course. The gaseous, Jovian planets would be further out since they contain more dangerous gases and weird effects on their cloud or atmosphere. The further away these planets are from the sun they could decrease the chance of unfortunate events. Also I would keep the small terrestrial planets close to the sun so they could be able to have the best chance to sustain human life ,and they wouldn't harm the rest of the solar system being there. So keeping the Jovian planets on the outskirts would decrease the chance of the weird rotation of Venus and the awkward 90 degree tilt of Uranus ,and maybe even the huge Moon we have. Then nothing can be perfect so maybe it is a good thing we have a relatively large moon.
Astronomers claim that objects throughout the universe are made of the same chemical elements that exist here on Earth. Given that most of these objects are so far away that we can never hope to visit them, why are astronomers so confident that the objects are made from the same set of chemical elements, rather than completely different substances?
Okay so every element has it's own atomic number, number of protons, and it has other characteristics that separate the chemical elements where you can know which element is which. So for example if we are viewing something on Mercury which we will never probably visit because of the distance and temperature we could find out what is on Mercury through a telescope actually. One way that telescopes help us to classify certain elements that are extremely far away is just by the light or energy that the elements give off when they are hot. Because every element has certain characteristics or per say a different version of lightning in it ,so it is kind of like every chemical or element has its own fingerprint where you could have a key to the element if you can identify the light or spectra of the element through a telescope or an instrument. Each element emits and absorbs at specific wavelengths which makes it possible to determine exactly which element it is even from a far distance. It is like really cool when you think about it because It has basically a key the various thing in the universe even if it is light years away.
Suppose the Sun were somehow replaced by a star with twice as much mass. What would happen to the gravitational force between Earth and the Sun?
The gravitational pull between the Earth and the sun would be twice as strong now with the increase of mass doubles. It is also under the same gravitational formula which is Fg=Gm1,m2/d2. The M2 equals 2 times. So Since the gravitational pull has increased then we probably would weigh more and things would probably move alot slower since we weigh more but have the same amount of mass.
Suppose Earth were moved to one-third of its current distance from the Sun. What would happen to the gravitational force between Earth and the Sun?
The gravitational pull this time would decrease approximately like nine times since you would square the one-third to get one-ninth. In this scenario you would have the exact opposite effect things would be much lighter and honestly I wouldn't say you would exactly move faster but in ways you could. You would however have probably less momentum since you would weigh less but have the same amount of velocity.
How would the planets of the outer solar system be different? Would they still have many moons? Explain your answer in a few sentences.
Well I mean if these huge planets made of gas some type of way started to lose what they are mainly made out of then I mean it makes them lose alot of their gravitational pull. Because they are pretty much losing a lot of their mass which is where they would go like from a room of smoke to when you open the door to just a breathe of smoke. This means it will lose a lot of their properties coming with the planet including their moons. It will lose the moons because the loss of gravitational pull.
How does quadrupling the distance between two objects affect the gravitational force between them?
Well the universal law of gravitation states that the strength of the gravitational force attracting any 2 objects is directly proportional to the product of their masses. So if the distance between 2 objects is quadrupled, then that means that the force between them would be weakened by a factor of 16. Formula is Fg=Gm2,m2/d2
