For our March lecture, prominent amateur astronomer Tony O’Hanlon will tell how observation of single star was to change how we saw the Universe, and relegated our Milky Way to just one of billions of objects. The date is Mon 9th March 2020 at 8 pm, and the venue is UCC. Please arrive 10 minutes early, or if you wish to join, then ideally at 7.40 if you can.
As recent as the early 1920’s, we believed the entire Universe consisted of what we called the Milky Way. Some astronomers of the day believed it was much larger, but how to prove it was a huge mathematical and observational problem and much debate ensued. Edwin Hubble, after whom the Hubble Space Telescope was named, then made a key discovery from his observations of a single star. It changed how we saw the Universe. Our understanding that our Milky Way is just one of billions of objects can be traced back to Hubble’s discovery. In this talk, Tony will tell its story.
Tony is a member and co-founder of Limerick Astronomy Club, and a former V.P. of the Irish Astronomical Association. His passions lie in deep sky objects and providing astronomy outreach.