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Subject Advice

Astronomy & Spaceflight


Thank you for visiting my Astronomy Advice page.

My main 'qualification' is as an amateur with my own small observatory, and knowledge of practical back garden astronomy. I was Secretary of the York Astronomical Society for 5 years and remain an active member. I am a good organiser, with a professional background in Adult Education, Youth Work and Community Development. I was an early member of my local U3A, and our Speaker Secretary for 5 years.

I have been interested in Astronomy and Space exploration for 70 years, inspired by Patrick Moore and Arthur C. Clarke.

I hope no one will feel that they know nothing about astronomy and so are inhibited about asking me for advice. The simple questions are often the best. 


Support for Groups 

Here is a lot of stuff for you to consider. Please share with your Group.
When running a Group there is no set pattern anyone is expected to follow.

As with any u3a Group, the organiser should not do all the work for the group, s/he should get each member to research a topic and make a presentation.

A good format is to have a presentation for about 30 minutes followed by Q & A & discussion. Access to the internet, a computer, projector and screen or flat screen is very useful as Google knows everything.

Astronomy is a very sociable activity - sharing the experience of seeing Saturn or the Great Globular Cluster for the first time is very special. In a group you share and learn from each other, and it’s fun. As u3a Astronomy Adviser I am asked where to get information for Study Groups to consider because the range of topics within the catch-all “Astronomy” is so huge. The simple answer is the Internet, but where to start ?!  


Jupiter (©ESA  European Space Agency)

The largest planet at 87,000 miles diameter.  Made mostly of gas, it is the fastest spinning planet at 28,000 mph. The Great Red Spot is a storm in the outer layer about 10,250 miles across. 

Andromeda Galaxy -  © John Roberts

The Andromeda Galaxy can be seen with binoculars as a feint fuzzy patch.  It is the nearest galaxy to our Milky Way at 2.5 million light years away.


Here’s my talk The Solar System, with a little of what is beyond. Click on the picture. 

List of useful websites

List of useful websites:-

Finding Speakers

For speakers at your u3a General Meetings of all members, maybe not small groups, contact Physics Departments in local Universities - they are likely to have lecturers and PhD students who could come to visit you. They normally do not charge a fee but sometimes ask for travel costs. Also The Federation of Astronomical Societies  https://fedastro.org.uk/fas/has a list of speakers.

Find your nearest Astronomy Group

There are many Astronomy Societies across the UK; u3a members should consider visiting them for talks or observing evenings. To find your nearest amateur society Google your town’s name and ‘Astronomy’. Members of 'ASs' are all a bit nerdy but all are committed to outreach and making astronomy interesting for the public. If you go when they have their telescopes operating wear very warm clothes! You will never forget your first sight of the Moon or Saturn with your own eyes in a small telescope.

You and your friends can do actual observing of things in the night sky without telescopes. Ordinary binoculars are very good for looking at the Moon, especially when it's not full, it's too bright then.

If you are thinking of buying a telescope, please visit my  BUYING A SMALL TELESCOPE as a start. 

NEVER LOOK AT THE SUN WITH BINOCULARS OR A TELESCOPE - THIS WILL CAUSE INSTANT AND PERMANENT BLINDNESS.  

Find a local u3a Astronomy group

U3a does not hold a complete database of astronomy groups in various regions.  However, it is possible to find a group you want by following one of the steps below.

Using Siteworks

  1. In Browser, type in https://u3asites.org.uk/oversights/groups/
  2. This will take you to “Oversights for SiteWorks” page.
  3. On the top bar of this page, select Groups.
  4. On the top right-hand side you will see a search box. Enter your subject name in the box. You will now get a listing of groups according to the regions. 
  5. You will also see a Group Name Tag Cloud; you can also find your subject this way

Using Google search 

This is an easy-to-use platform for finding information on the internet quickly. Type in the name of your local u3a subject group, an example Sheffield u3a astronomy group. if there is a group , this will appear.

If there is not a u3a Astronomy Group on this list near you can search the websites of u3a's you could travel to see if they have Astronomy or Science Groups. You might need to search for u3as in towns near you as a start. You can do this Using the u3a Google map created featuring pins (these are in different colours representing the 12 regions/ nations) for most u3as across the UK to assist you in finding local u3as.

  • If you click on the link - UK u3as - Google My Maps . Using the ‘search' icon (it looks like a magnifying glass) type in your location or postcode, town, village and you can search for a local u3a and then go to the local website to see whether a subject group exists in your preferred u3a.
  • Alternatively, using the same UK u3as - Google My Maps. You can click on the arrow ( very small arrow underneath the red tick). This will give you a list of u3as and you can select u3as closer to your preferred location. 
Safety first! Precautions and Procedures for sky observing events

There are precautions and procedures which all u3a Group Leaders should keep to. In addition here are things Astronomy Group Leaders should consider for night sky observing events for your members and/or the public : First Common sense must prevail !   And :-

  • Find a dark sky site away from street lights.
  • Tell people before an event to wear warm clothes, woolly hats, gloves and appropriate footwear for eg : mud, wet grass, wet concrete.
  • Tell them where to park if arriving in a car, and to keep their cars and lights away from the telescopes.
  • Tell them to bring red hand torches or low light white torches, or to use their mobile phones lights for moving about in the dark AVOIDING SHINING THEIR LIGHTS INTO ANYONE'S EYES.  LED lights are very bright but can be dulled with layers of insulating tape - experiment !
  • Tell them to look out for trip hazards.
  • Tell them not to touch the telescopes.
  • For day lit events no one should look at the Sun directly with binoculars or a telescope, it will blind you.
  • Children must be closely supervised.
  • Place red lights on the feet of tripods, to stop people tripping over them. 
  • Tell them to enjoy themselves and you like simple questions !

Here's a challenge - find and see the Andromeda Galaxy 2.5 million light-years away - you can see it with binoculars, let me know when you succeed. A £10 Planisphere and a basic star maps book will help you learn the sky. Find the Plough, Orion and Cassiopeia Constellations first, they are the most obvious.


Moon image featuring Clavius Crater - © Graham Moore

Clavius crater on the Moon with its crescent of 5 younger small craters inside. Clavius is 144 miles across. The Clavius Base featured in the film '2001, A Space Odyssey' is not visible. 

Solar eclipse - © Mike Pringle.

A Diamond Ring total Solar eclipse, caused by the Moon passing between the Earth and the Sun.


Spaceflight 

News of Moon and Mars landers always includes comments from people who should know better about when we will go to Mars.  

The argument in favour of women & men going into space is that humans for thousands of years have had a built-in desire to see what is over the next horizon.  We still do, but this cannot be extended into space.  Humans need air, water and food and we create a lot of harmful waste.  These essentials make living in space or on the Moon or Mars extremely complicated and expensive. Read more   Going to Mars_v6 (19 Byte)


Don’t miss the BBC TV ‘The Sky at Night’  for an update of all things Astronomical. The presentation style is often juvenile and its broadcast dates are erratic, but its contents are always good.

BBC Four - The Sky at Night, Question Time Special, Your Images: Flickr Favourites

There are several magazines worth reading as well E.G. Astronomy Now and The Sky at Night available from newsagents. 

Please don’t hesitate to ask me for more help.

Martin Whillock FRAS UK u3a Astronomy Adviser January 2025


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