Uploaded May 2026 | Updated September 2026, 2 weeks ago

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What's the difference between a solstice and an equinox? Why isn't Pluto a planet? How does trash end up in space? In one out-of-this-world video, Britannica answers all your questions about space and the planets.

00:00 Solstice vs. Equinox
02:50 Is Pluto a Planet?
06:10 Meteors vs. Meteorites vs. Meteoroids
09:08 Solar and Lunar Eclipses
12:26 Coronal Mass Ejections
14:23 Space Trash

More from Britannica:
Our 5 Dwarf Planets: britannica.com/list/our-5-dwarf-planets
Timeline of the Space Race: britannica.com/story/timeline-of-the-space-race
Will We Ever Travel at Light-Speed? britannica.com/story/will-light-speed-space-travel-ever-be-possible
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