(Syfy Wire::Bad Astronomy) – Phil Plait:
What’s a planet?
That seems like an easy question to answer, but really it’s not. If it were, then we wouldn’t always be arguing if Pluto were a planet or not! …
blastr 2017-2-21 planets
This entry was posted on 2017/02/23 at 00:00 and is filed under Astronomy. You can follow any responses to this entry through the RSS 2.0 feed.
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