If you want solutions to …

If you want solutions to the exercises given for 26 April, please see me in my office (room 403). They were easier than the exercises given for 3 May, but some may still have given somebody some headache. I strongly recommend that you do the exercises for each week, you can learn a lot from them (more than from the lectures)! It is e.g., extremely valuable to really get used to calculating with the quantities we use in astronomy (kpc, arcsec per year, solar masses etc.).

Per