The Sun’s Gravity
Time-lapse movies show comets both plunging into and passing by the Sun. The images are from the ESA/NASA Solar and Heliospheric Observatory (SOHO) spacecraft.
Comets go around the Sun in large, elliptical orbits. Over time, the Sun’s immense gravity can change a comet’s orbit so that it comes too close to the Sun to escape.
Because of its unique and continuous view of the Sun, SOHO has discovered more comets than all observers in history combined.