Universe in Problems:General disclaimer

Universe in Problems is an educational collection of cosmology problems and worked solutions.

Checking a solution

Statements and solutions can contain mistakes or use different conventions. Check the assumptions, units, metric signature and definitions of quantities before comparing results. Consult the cited scientific sources when using a result in your own work.

Revisions and sources

The history tab records earlier versions of each wiki page. A page’s last-edit date is not the publication date of every scientific result that it discusses. External papers and websites are maintained by their respective authors and providers.

Reporting a problem

Please include the page address, problem number and a short explanation when reporting an error to universeinproblems@gmail.com. Project and author information is available on the About page.

For questions about reusing material, contact the project authors and consult the original source.