Multilingual flashcard 99 – Planet in 10 languages
Our Solar System contains a eight planets, alongside other astronomical bodies. The classification of planets has changed; many still remember learning that Pluto was a planet, though it has since been reclassified.
A planet is an astronomical body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion and has cleared its neighbouring region of planetesimal objects (solid objects such as protoplanetary debris) (Definition from International Astronomical Union cited on Wikipedia).
Many are visible to the naked eye and are often brighter than stars in our night skies. They have become part of mythology in many world cultures, reflected in their names to this day. The name planet comes form the Greek planetes asteres ‘wandering stars’ or planetai ‘ wanderers’ because they appeared to move across the sky, whereas the others stars were ‘fixed’ in their relative positions from each other.