How long will the distance of the earth from the sun be half of the current distance in a year ?

How long will the distance of the earth from the sun be half of the current distance in a year ?
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Scientist Kepler has a formula for the rotation of the planet. That is: - T ² ∝ R ³ Here , T = period of rotation of the planet ; R = Distance of the planet from the star. The equation can be written in a slightly different way - T1 ² / R1 ³ = T2 ² / R2 ³ ................. ; Alternating distance , R 2 = R1 / 2; Earth's current rotation period , T1 = 365 days ; Changed rotation time , T2 =? Now we put the values ​​in the equation (1) , T2 = T1 / √8 , that is , T2 = 129 days ( approximately ) . If this were the case, but our beautiful world would not be suitable for the development of life !!!!                                                                                                                                  
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