This is Holsts "The Planets" symphonic suite, composed by Isao Tomita, combined with artist renditions, NASA animations, and actual probe footage. The result is an educational yet entertaining travel across the solar system.

In part four, we round out our trip around the solar system with stops at Uranus and Neptune. Pluto, with its moon Charon, is not included in the suite as it was discovered 14 years after Holst finished his suite, and the suite was never revised to include it. I expect it would have been "The Underlord" or something to that effect.