The other day, a commenter said that he thought that Constellation was just the rocket and capsule. Many people don’t know what Constellation (and other things) are, and aren’t, which is what feeds part of the ignorant hysteria that we’ve seen in the press and on the Hill since the new budget was bumblingly introduced in February (and unfortunately, the administrator remains poor on his messaging and communications capability, with his talk about “bailouts” for the commercial sector). Anyway, as a probably futile attempt to clear the fog, I have a glossary and explanation up over at PJM today.