This animation illustrates Kepler's 2nd law of planetary motion. Choose the statement that best describes it.

aThe imaginary line from the Sun to the planet sweeps out equal areas in equal periods of time, so the planet moves slowest when it's furthest from the Sun and fastest when it's closest to the Sun.

The imaginary line from the Sun to the planet sweeps out equal areas in different periods of time because the planet moves slower when it's furthest from the Sun and fastest when it's closest to the Sun.

The imaginary line from the Sun to the planet sweeps out different areas, but in equal periods of time, so the planet moves slowest when it's furthest from the Sun and fastest when it's closest to the Sun.