Help sessions 21/04 and 28/04

Hi everyone, I (Jake) am away for another two weeks.

-- The plan this week is to meet on zoom for problem set 11. The link will be added soon.

-- Next week, there is no one to take the session on Friday 'live', so as a once-off, I'll upload the solutions for problem set 12 on Monday for you to work with throughout the week.

-- If you have any questions about set 12, you can post on astro-discourse (a good time to get familiar with the forum) and I'll look at them on Friday. 

-- That said, I will mostly *not* be online for a lot of the next two weeks. I may only reply to the astro-discourse posts the Monday after the 28th. 

-- Additionally, my situation currently is such that I may not, at short notice, be available this Friday either. To preempt this, I have uploaded the solutions to set 11 already. Worst case, we do the 'read solutions and post on astro-discourse' two weeks in a row. 

-- I have also uploaded the set 10 solutions.

-- From May onwards, teaching and my availability will (hopefully) be as per the usual. 

Jake