How is a comet's orbit different to Earth's orbit?

A comet's orbit is typically more elongated and eccentric than Earth's nearly circular orbit around the Sun. While Earth follows a stable, predictable path that keeps it relatively close to the Sun, a comet's orbit can take it far out into the outer solar system before swinging back close to the Sun, often on a multi-year or even multi-century cycle. Additionally, cometary orbits can be influenced by gravitational interactions with other celestial bodies, further altering their trajectories.