In theory, a moon can have a moon. The region of space around a satellite where a sub-satellite can exist is called a 'Hill sphere'. Outside the hillsphere the sub-satellite would be lost around the satellite, and therefore orbiting the planet or the sun instead of the moon itself... [Read more about Can a Moon Have a Moon?]
Hi Everyone! I'm Andi. Some of you know me from the WDAS monthly meetings or Star Parties, but the WDAS Newsletter reaches a wider audience. I'm also part of your Newsletter team with Mark and Héctor. Héctor created this amazing website for you and he makes the newsletter work. Mark writes most of the articles for your pleasure and education, while I publish them on the web. But this article I'll write myself, because I want to introduce some regular new content to the WDAS website and ask you to consider supporting the work. [Read more about How you can support Astronomy Education]
It’s almost that time of year again – society subscription renewal for the coming year. Rates will be kept at 2016 levels: [Read more about WDAS Subs 2017]
We are now taking orders for Night Scenes 2017. We have actually ordered 22 copies in the end, so if you want to reserve a copy please let Mark know. We don’t have to remind you how excellent, and indispensable the almanac is, so don’t delay. Price will be £4.00 to paid up members (it actually retails in outlets at £7.00) non members £5.50p. [Read more about Night Scenes 2017]
Nice to be back at the museum for a lecture, well at least Mark was; he was giving the lecture to the Whitby Naturalist Society. Mark had been asked some time ago to give a talk about the night sky, and his chosen subject was the diversity of celestial objects astronomers observe. It was slightly odd giving a talk on a Saturday afternoon... [Read more about Mark at the Museum]
Andy L, Keith and Mark hosted a star party for a charity function organised by Maggie Keating of Ferndene house, Fylingthorpe. The event was to raise funds for the Brighter Futures charity – helping educate children in parts of Africa... [Read more about Fylingthorpe Event]
After discussions at last month’s meeting, it looks like we are bound for the Hare and Hounds once again for this year’s Christmas bash.
It has been provisionally booked for December 9th for 19:30h. 12 places are up for grabs. The menu is with these notes and on the website. If you could let Mark know your choices as soon as possible it would be much appreciated.
Not long now to the 2016 Leeds Astromeet which is on Saturday November 12th, at Leeds University. The date for your diary is Saturday November 12th, usual venue- Leeds University, Clothworkers Hall – Doors are open from 09:00h with lectures starting at 10:00h. [Read more about Leeds Astromeet 2016]
Following the toppling of the Whitby museum dictator, and the restoration of sanity (and hopefully all amenities) we shall discuss at the forthcoming October monthly meeting whether it is viable to return, but... [Read more about Paul Money Lecture Update & Night Scenes 2016]
| Sun | Rise | Set |
|---|---|---|
| Actual | 05:18 | 20:58 |
| Civil Twilight | 04:34 | 21:42 |
| Nautical Twilight | 03:32 | 22:44 |
| Astronomical Twilight | 01:38 | 00:38 |
| Moon | Rise | Set |
|---|---|---|
| 17:16 | 23:33 |
