Check the Archive!   We may have already answered your question.
Or search by topic:
If you are younger than 18 years old, please tell us your age or grade. It will help us answer your question in a way you can understand! If you are under age 13, you should have your parent's permission to ask us a question. Note to parents and teachers.
To ask a question, click here or send an email to: email@example.com with the subject line "Ask An Astronomer"
Before submitting a question, please read our FAQ. Thanks!
Stefano Meschiari and Jill Naiman © 2008