Summarize the development of the Greek geocentric design through Ptolemy. How did the Ptolemaic model account for obvious retrograde motion?
The Ptolemiac model was may be to describe retrograde motion by having actually the planets move on smaller circles attached to the larger circles top top which they went roughly Earth.

You are watching: The dwarf planet eris orbits the sun every 557 years.


You are an astronomer on planet Tirth, which orbits a remote star. It has recently been embraced that Tirth is spherical in shape, though nobody knows that is size. One day, you find out that top top the equinox your sun is straight overhead in the city that Tyene, situated 400 kilometers due north of you. On the equinox, you go exterior in Alectown and also observe the the altitude of your sunlight is 87 ∘. What is the circumference of Tirth?
Which that the adhering to was not a major advantage that Copernicus"s Sun-centered model over the Ptolemaic model?
Match the following names and also the significant roles play in overturning the old belief in an Earth-centered universe.
Copernicus emerged a model in i m sorry planets move roughly the sun along perfectly circular orbits.Tycho noted a huge amount that data from astronomical observations and also suggested version in i m sorry the sun orbits earth while all various other planets orbit the Sun.Kepler described the regulations of planetary activity for the heliocentric model, according to i beg your pardon planets move around the sunlight along elliptical orbits.Galileo answer the ancient objections come the heliocentric model, arisen an amplified telescope, and noted evidence in donate of the heliocentric model.
The dwarf earth Eris orbits the sunlight every 557 years. What its mean distance (semimajor axis) indigenous the Sun?
The dwarf planet Eris orbits the sun every 557 years. Exactly how does its mean distance compare to that of Pluto?
making observations and also conducting experiments that dispelled scientific objections come the Sun-centered model.
When ns looked right into the dark lanes the the Milky method with mine binoculars, I observed what must have been a swarm of distant galaxies.

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This declare does not make sense, due to the fact that we can not see with the band of irradiate we contact the Milky way to exterior galaxies; the dark fissure is gas and dust blocking our view.
When Einstein"s concept of gravity (general relativity) obtained acceptance, the demonstrated that Newton"s theory had been
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