Rewrite this paragraph so that a layman could easily understand it.

Mars was an enigma to ancient astronomers, who were bewildered by its apparently capricious motion across the sky—sometimes in the same direction as the Sun and other celestial objects (direct, or prograde, motion), sometimes in the opposite direction (retrograde motion). In 1609 the German astronomer Johannes Kepler used the superior naked-eye observations of the planet by his Danish colleague Tycho Brahe to empirically deduce its laws of motion and so pave the way for the modern gravitational theory of the solar system. Kepler found that the orbit of Mars was an ellipse along which the planet moved with nonuniform but predictable motion. Earlier astronomers had based their theories on the older Ptolemaic idea of hierarchies of circular orbits and uniform motion.
system
is paragraph ko phir se likhen taaki ek aam aadmi aasaani se ise samaj sake.

mangal pracheen khagolavidon ke liye ek rahasy tha, jo akaash main isaki spasht rup se mitavyayi gati se ghabaraae hue the - kabhi -kabhi surya or anya khagoleey vastuon (pratyaksh, yaa progress, gati) ke samaan disha main, kabhi -kabhi vipareet disha main (pratigaami gati).1609 main german khagolashastri johans kepler ne apane danish sahyogi tiko brahe dwaara grah ke behatar nagn-ankhon kii tippaniyon kaa istemaal kiya, jo ki gati ke apane niyamon ko anubhavjanya rup se katata he or isliye saura pranali ke aadhunik gurutvkarshan siddhant ke liye maarg prashast karata he.kepler ne paaya ki mangal kii kaksha ek dirghavritt thi, jiske saath grah gaiyr -samaan lekin purvanumanit gati ke saath chalaa gaya.isse pehle khagolavidon ne apane siddhanton ko golakaar kakshaon or samaan gati ke padanukram ke puraane tolemic vichaar par aadhaarit kiya tha.
user
mangal kabhi pracheen khagolavidon ke liye ek rahasy tha.ve akaash main iske asthir andolan se hairaan the.kabhi -kabhi, yah sidhe chalegaa - surya or anya khagoleey vastuon ke samaan disha main.kabhi -kabhi, yah vipareet disha main chalegaa, jise "pratigaami" kaha jaataa he.1609 main, german khagolashastri johans kepler ne apane danish sahyogi tiko brahe dwaara mangal ke behatar nagn-ankhon kii tippaniyon kaa istemaal kiya, taaki vah grah ke prastaavon kaa pataa laga sake.isane hamaare saura mandal main gurutvkarshan ke aadhunik siddhant kaa maarg prashast kiya.kepler ne paaya ki mangal kii kaksha ek dirghavritt aakaar thi.unhone paaya ki yah gaiyr -samaan lekin anumaanit gati ke saath chalaa gaya.isse pehle, khagolavidon ne golakaar kakshaon or samaan gati ke padanukram ke tolemic vichaar kaa paalan kiya tha.
assistant
<|system|>
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<|user|>
is paragraph ko phir se likhen taaki ek aam aadmi aasaani se ise samaj sake.

mangal pracheen khagolavidon ke liye ek rahasy tha, jo akaash main isaki spasht rup se mitavyayi gati se ghabaraae hue the - kabhi -kabhi surya or anya khagoleey vastuon (pratyaksh, yaa progress, gati) ke samaan disha main, kabhi -kabhi vipareet disha main (pratigaami gati).1609 main german khagolashastri johans kepler ne apane danish sahyogi tiko brahe dwaara grah ke behatar nagn-ankhon kii tippaniyon kaa istemaal kiya, jo ki gati ke apane niyamon ko anubhavjanya rup se katata he or isliye saura pranali ke aadhunik gurutvkarshan siddhant ke liye maarg prashast karata he.kepler ne paaya ki mangal kii kaksha ek dirghavritt thi, jiske saath grah gaiyr -samaan lekin purvanumanit gati ke saath chalaa gaya.isse pehle khagolavidon ne apane siddhanton ko golakaar kakshaon or samaan gati ke padanukram ke puraane tolemic vichaar par aadhaarit kiya tha.</s>
<|assistant|>
mangal kabhi pracheen khagolavidon ke liye ek rahasy tha.ve akaash main iske asthir andolan se hairaan the.kabhi -kabhi, yah sidhe chalegaa - surya or anya khagoleey vastuon ke samaan disha main.kabhi -kabhi, yah vipareet disha main chalegaa, jise "pratigaami" kaha jaataa he.1609 main, german khagolashastri johans kepler ne apane danish sahyogi tiko brahe dwaara mangal ke behatar nagn-ankhon kii tippaniyon kaa istemaal kiya, taaki vah grah ke prastaavon kaa pataa laga sake.isane hamaare saura mandal main gurutvkarshan ke aadhunik siddhant kaa maarg prashast kiya.kepler ne paaya ki mangal kii kaksha ek dirghavritt aakaar thi.unhone paaya ki yah gaiyr -samaan lekin anumaanit gati ke saath chalaa gaya.isse pehle, khagolavidon ne golakaar kakshaon or samaan gati ke padanukram ke tolemic vichaar kaa paalan kiya tha.</s>
