Today’s picture from the Tree of SCIENCE!!! is a two-fer:

That’s a glass star and a wooden crescent moon, and together, obviously, they stand for astronomy and planetary science. Really, that’s so easy and obvious that I don’t need to say any more.
Physics, Politics, Pop Culture; formerly on ScienceBlogs
Today’s picture from the Tree of SCIENCE!!! is a two-fer:

That’s a glass star and a wooden crescent moon, and together, obviously, they stand for astronomy and planetary science. Really, that’s so easy and obvious that I don’t need to say any more.