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The Cardiff Astronomical Society (CAS) is a thriving society located in South East Wales. It has been in existence for over 40 years and is one of the largest amateur astronomical societies in the UK. CAS continues to provide a range of facilities for both Society members and the public at large including a varied programme of talks on Thursday evenings (except in August) at the Physics and Astronomy Department of Cardiff University which, we were pleased to see, was named University of the Year at the 2017 Business and Education Partnerships Awards. In addition, regular night sky (and occasional solar) observing sessions are held at the Society's own Observatory at Dyffryn Gardens.

Our members come from all walks of life and their knowledge of astronomy ranges from complete beginner to advanced. You don't need any specialist knowledge to join us and neither do you need to own a telescope or binoculars. It's also possible to try us out before joining!

More details about the Society and what it does are available here

We are keen to get more Society members on board to assist with the running of CAS events - please see here how you can Help Us

LIGO and Gravitational Waves

Come and hear Nobel Prize winner Professor Barry Barish talk about the amazing hunt for gravitational waves which began when they were first predicted by Einstein over 100 years ago. Professor Barish was awarded the Nobel Prize for Physics in 2017 for his part in the detection of gravitational waves for the first time in 2015. He will talk about his contribution to this momentous scientific event, and will present his view of the future of gravitational wave astronomy.

Starting at 6.00 p.m. on Tuesday, 29th May 2018 at the Reardon Smith Lecture Hall, National Museum Cardiff, Park Place, Cardiff, CF10 3NP

Tickets are free, but booking is recommended. Tickets can be booked by clicking here

CAS Privacy Policy

In the lead-up to the General Data Protection Regulation (GDPR) coming into effect on 25 May 2018 the Cardiff Astronomical Society introduced a Privacy Policy on 20 April 2018. It can be accessed by clicking on the button below and can also be found among the Important Documents contained in the Members' Area of the website.

Privacy Policy

The Policy will be kept under review in the light of experience gained and comments received from CAS members.

Upcoming CAS events

  • Next Talk

Thursday, 24th May 2018 - "Mysteries of the Solar System" - Dr Chris North, Cardiff University

From 7.30 p.m. till 9.30 p.m. (at the latest) at Cardiff University's School of Physics and Astronomy, Queen's Buildings, The Parade, Cardiff CF24 3AA venue for talks

  • Next Observing Session

Friday, 7th or Saturday, 8th September 2018 - please click here

  • Next Star Party

To be confirmed - please click here.

How you can support CAS when shopping online

If you chose to do so, every time you shop online via 'easyfundraising' at one of 3,300 retailers - see opposite - a donation will be made to the Society and it won't cost you a penny extra. It's really simple to get started but please click here for more information including an important tip.

Sign up for free with easyfundraising

Come and join some of the Society's 300-plus members at one of our talks or observing events.
We promise a warm and friendly welcome for all.
Only £15.00 per annum also means you can make use of our Library.

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