These animations simulate the orbit of comet Halley, which takes about 76 years to orbit the sun.
Compared to the planets, most comets have highly elliptical orbits and widely varying orbital
speeds. Comet Halley's next passage through the inner solar system will occur in
the year 2061.
Click the wide angle view to see
comet Halley's orbit compared to the entire solar system.
Click the inner solar system button to view the comet
as it passes near the sun.