According to kepler, which planet travels the fastest? earth jupiter mercury neptune

The answer is "Mercury".

Mercury

Explanation:

According to second Kepler's law of planetary motion:  

The line joining the planet and the sun sweeps equal areas in equal amount of time. This describes the speed of the planet.

In order to conserve momentum, the planet closest to Sun would travel fastest and planet farthest from Sun would travel slowest.

Since Mercury is the closest planet to sun, it would be fastest.

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

auroras are generated by charged solar particles hitting molecules in earth's atmosphere. this usually happens in high latitudes, because our planet’s magnetic field tends to funnel these particles toward the poles. that’s why it can be experienced in northern ohio.