Why do we use FITS format for scientific images especially in astronomy? How is it different from formats such as JPEG, PNG etc?
Have there been studies of "old photons" to see just how constant things like Planck constant has been?
Difference between J2000, FK5 and ICRS coordinate systems? Which one does the Yale Bright Star Catalog use?
Only top scored, non community-wiki answers of a minimum length are eligible