Officially, Pluto is no longer a planet ... astronomers say. The word "planet" originally described wanderers of the sky that moved against the relatively fixed background of star.

Tell a joke. Give a speech. Sing a classic rock anthem. You can do all of these things — and more — at Planet Word, a museum of words and language opening Oct. 22 in downtown Washington.

See Also: Q: What is the origin of the word ... that we no longer need to rely on the simple definition from past millennia that an object is a "planet" if it moves against the background of ...

No – Pluto is technically a dwarf planet ... Metzger argues that planetary scientists use the word “planet” in a number of ways because it’s a functionally useful term, and that a planet ...

Officially, Pluto is no longer a planet ... astronomers say. The word "planet" originally described wanderers of the sky that moved against the relatively fixed background of star.