Stars And Beyond

Ancient people used astronomy to navigate apply the stars, when to plant their crops, etc
Stonehenge was used for star counting and/or the predicting of motley astronomical phenomena such as eclipses. it was certainly set up in respect of the Midwinter Solstice. The caracol temple have been a proto-observatory with doors and windows adjust to astronomical events, specifically around the path of Venus as it traverses the heavens.
Early models were geocentric meaning having earth as the center, as time progressed it was looked as cheer being the center.
The real take in of Retrograde motion is due to the planets orbiting at different speeds (closer to the sun the faster they go). As the earth catches up to and passes (say) Mars in its orbit for a bit as we pass by it looks like Mars moves backwards (it is doing no such thing).
Keplers laws be:
1.The orbit of every planet is an ellipse with the Sun at one of the devil foci.
2.A line joining a planet and the Sun sweeps out capable areas during equal intervals of time.
3.The self-coloured of the orbital period of a planet is directly proportionate to the cube of the semi-major axis of its orbit.

You can predict the period of a planet if you know keplers third law which is P^2 =a^3 ; P being in geezerhood and A being in AU.




Aristrachus predicted the circumference of the earth by useing the shadow of a stick in one location. And then(prenominal) then the shadow of the same stick in other location of a known distance away. He mensurable the shortest shadow for the day. That way he knew he was comparing equal shadows. Then by comparing the difference between the two shadows and the known distance between the two sticks he deliberate the circumference of the earth.

Newtons 3 laws of motion- I. Every object in a claim of uniform motion tends to remain in that state of motion unless an external military is applied to it.
2. when a force acts on a body, the resulting acceleration is equal to the force shared out by the objects mass.
3. for...If you want to get a full essay, tell it on our website: Ordercustompaper.com



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