Astronomy Definition and 805 Threads

Re: Planet X, http://www.knoxnews.com/kns/outdoors/article/0,1406,KNS_326_2021207,00.html

Again, I'm not sure if this belongs here, but it fits as well as Flatland. Spaceland is a SF story by Rudy Rucker. It deals with the life of Joe Cube (stupid name, I know), and how it's changed when he's visited by a four-dimensional woman, named Momo. As corny as it may sound (and as...

Given - 1) Twin earth-sized planets rotate about each other in a solar system. 2) The plane of their mutual orbit is the same plane in which they rotate about their star 3) Their star provides (on average) the same amount of energy as our sun Questions - 1) What is the size and nature of...

Hi everyone Use this topic for posts about ongoing/upcoming stargazing events (e.g., comets, eclipses, occultations, meteor showers, etc.). -Phobos

[SOLVED] Astronomy Q&A Game Hi guys! Most of you know how this works but for the newcomers: The rules are this: someone will ask a question and if the question is not answered correctly within 3 days then a new question will be posted. If an answer to a question is posted and the...