In the elliptical orbit of Comet Halley shown in Fig. 13.21a, the suns gravity is responsible for

Question:

In the elliptical orbit of Comet Halley shown in Fig. 13.21a, the sun€™s gravity is responsible for making the comet fall inward from aphelion to perihelion. But what is responsible for making the comet move from perihelion back outward to aphelion?

Fig.13.21

Planetary orbits: Neptune Uranus Pluto Saturn Jupiter 1977 1983 1985 Mars 1948 2024 Orbit of Comet Halley Earth 1987 198