Johann Gottfried Galle - Video Learning - WizScience.com
The appearance of Comet Encke
Comet 2P Encke
STEREO Watches as Comet Encke Loses Its Tail
Johann Franz Encke was a German astronomer. Among his activities, he worked on the calculation of the periods of comets and asteroids, measured the distance from the earth to the sun, and made observations of the planet Saturn.