2014-12-01 21:38 In the specific stars/planets section is Fomalhaut talking about the star or the planet Fomalhaut B?

The rules refer to the entire Fomalhaut system (including both the star and planet).

2014-12-01 21:41 Are TW Hya and TW Hydrae the same thing? If so, which one should be used as an answer during competition?

Yes, they are the same object. Hence, it does not matter which response is given, as both are correct.

2015-02-13 19:28 When using formulas to obtain answers for questions, will the formula constants come from the formula sheet on the Science Olympiad website or will they come from elsewhere?

There is no official "formula sheet" for the Astronomy C event. I believe you are referring to the sheet on the website (, which was made by competitors, not event supervisors. However, there are helpful formulae and examples on the Coaches Manual CD. When grading numerical answers, supervisors always should accept a range of answers, usually plus or minus 10% of the value on the key. This guideline is shown on the sample tests at and A nominal range can be explicitly due to competitors having slightly different physical constants or tabulated values depending on their resource.