Study on conic sections defined by the general quadratic equation Ax^2+Bxy+Cy^2+Dx+Ey+F=0. Classification based on discriminant Δ=B^2−4AC: Δ<0 — ellipse, Δ=0 — parabola, Δ>0 — hyperbola. Excentricity e: e=0 circle, 01 hyperbola. Movement of satellites follows an inverse square law for the central force; Kepler's laws define orbits on an ellipse